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Firmware Update Video Tutorial
The camera firmware can be updated over USB using the following procedure:
Power on the camera while holding down the Select Button to enter Firmware Update mode. Continue to hold down the Select Button until the LED flashes green slowly.
Plug in the USB cable. The camera will appear as a USB drive. Allow up to two minutes for the drive to appear, if it doesn't right away. This drive is separate from the one where clips are stored, so your footage won’t be visible, but is safe and not affected by the firmware update.
Copy the new firmware file (EMBER.BIN) into the /fw/ folder.
Click the Select Button. The LED will begin to flash green quickly as the firmware is updated.
Wait for the camera to automatically restart with the new firmware. This should take up to two minutes.
Fix for USB disk access on macOS when CODEX Device Manager is also installed.
Note: For firmware update via macOS while CODEX Device Manager is also installed, you may need to wait up to two minutes for the EMBER FW disk to mount in Firmware Update mode. You can also use another host, such as an iPhone with USB-C, to do the update.
Improved protection and error handling for disk switching edge cases.
Fix for current time not updating when TIME menu is opened.
Fixes HDMI/SDI preview artifact on right edge of frame on Ember S2.5K, and Ember S5K in Binned Monochrome modes.
Fixes settings persistence for new v2.2.x settings when changed from the App.
Improves App compatibility with external pSLC SSDs (updates Pre-Record values).
Add support for setting Date/Time from the App.
Adds support for the Ember Media Expander:
Record to hot-swappable media in the form of U.2 NVMe SSDs.
HD-SDI output with optional clean-feed.
Improves interpolation for higher-quality 1080p preview/playback over HDMI and SDI.
Adds anamorphic de-squeeze options for HDMI and SDI preview.
Adds level-driven remote start/stop input.
Adds frame sync input and output for synchronizing multiple Embers or triggering individual frame captures from an external signal source.
Includes capture pipeline power optimizations.
Adds a workaround for instances where the camera does not mount as an external drive on macOS. To activate the workaround: Hold down the Select button while plugging in the USB cable. This forces the camera's USB device driver to use a simpler connection method, similar to v1.5.2.
Review USB Connection troubleshooting guide to rule out other issues.
Allow up to two minutes for the drive to appear, if it doesn't right away.
While the workaround is activated, App control over USB is not available.
Bugfix: Clips larger than about 2,000,000 frames (primarily long clips on S2.5K) are now broken into multiple files to prevent sample table memory overflow.
Bugfix: More reliable update/default process for WiFi SSID and password.
Bugfix: Camera now informs App of EF lens disconnect or switch to manual focus.
See v2.0.294 release notes below for the main v2.0 feature list.
Ember S2.5K Support
Expanded Resolution/FPS options for Ember S5K
EF Lens Support (on supported hardware)
Pre-Record (on supported hardware)
App Live Preview
App USB Control
SSD FW Update (performance) and faster Format
Deprecated due to a bug that could cause the firmware to misinterpret calibration data. Replaced by v2.0.294 - see above for v2.0 general release notes.
Support for Stabilization using the latest Ember App. (Wired connections only)
Updates to timed metadata so that it is preserved when trimming clips.
Additional metadata optimizations and bugfixes.
Optimizations to improve USB transfer speed. Expected improvement is 30-50% on USB 3.x hosts. Typical transfer speeds are now 300-350MB/s.
Bugfix to address an issue that could cause dropped frames or software crash with long clips at max frame rate, especially in the second half of the SSD.
See Release Notes for v1.4.14 below for new features introduced in v1.4.x if you are upgrading from v1.3.x.
Adds setting for Project Frame Rate (Time Base). This sets the playback speed of captured video, which gets encoded in the video file. Common settings from 23.976 to 120.000 are available. See Menu and Settings for more information on how Project Frame Rate and capture FPS are related. Note: Changing Project Frame Rate may also change the HDMI output frame rate, which will cause monitors to resynchronize.
File system improvements including safe shutdown, SSD TRIM (improves write performance), and reduced delays with many clips on the SSD. Note: Formatting may take up to 60s now.
Support for App Control, Playback, and Export via Ethernet.
Support for App Playback and Export via USB (fastest method).
Improvements to App Playback and Export speed across all interfaces.
Support for Remote Menu Control via UART. See Pinouts and Remote Control for the public interface definition. MōVI Pro/XL/Carbon support via MōVI Controller also coming soon.
Improved timestamp accuracy for frame and IMU metadata.
Restored User FPS all the way down to 1fps.
On-camera UI tweaks including dedicated Play Icon (►) for one-click switch to Playback, HDMI viewport scaling to not be covered by on-screen display, new FPS list w/ speed multipliers.
Bugfix for occasional sensor link training failures on some cameras that would cause magenta blocks to appear until a reboot.
Other minor bugfixes and optimizations.
Fixes a bug that would cause sensor link training to occasionally fail on some cameras, resulting in magenta bars in the image that could only be cleared by power cycling.
This firmware version is still compatible with the Beta iOS Freefly Ember App, which is available on TestFlight.
Fixes a bug that prevented saving clips in native ProRes format after trimming in QuickTime. With the fix, it's possible to open a clip from the camera drive, trim it in QuickTime, and save the trimmed version in native ProRes format to another drive.
The fix also allows trimming in Finder, but only for clips already transferred to a local drive. (The camera's drive is considered read-only in Finder.)
This firmware version is still compatible with the Beta iOS Freefly Ember App, which is available on TestFlight.
Fixes a bug that caused the camera to crash when previewing clips from the camera's drive in macOS while also transferring files off the drive in the background.
Fixes a bug that could cause missing or corrupted frames when starting a new clip immediately after viewing a clip of a different resolution in Playback.
Updates to support factory calibration process.
This firmware version is still compatible with the Beta iOS Freefly Ember App, which is available on TestFlight.
Release Notes
Updates to on-camera UI
Firmware support for Beta iOS Freefly Ember App, Available on Testflight
Enables on-camera Wifi for iOS App Support
Bug Fixes for edge cases related to additional per-frame metadata
Bugfix for playback speed control, some playback issues for clips of shorter lengths
Additional Notes
Fan Mode 'LOW' will now disable active cooling after 30s or when Recording starts when in ideal thermal conditions
Firmware Update instructions are unchanged, but Firmware restart may take up to 120 seconds instead of 40 seconds
Adds IMU and additional per-frame metadata to recorded clips. Metadata format and parsing tools will be released later.
Optimizations for power reduction in color processing pipeline.
Optimizations for sensor link training to improve robustness over wider temperature changes during long clips.
Fan profiles updated to force high fan speed when recording in 5K at 400fps or above. In testing, this was beneficial to reduce large temperature changes during long clips.
User FPS is limited to a minimum of 16fps - lower values were not being properly set up in hardware. They will return in a later release.
UX Improvements: Always show REC when recording, auto-select Playback when opening Mode menu, improve scroll wheel feel for entering custom values (e.g. User FPS).
Back-end setup for iOS App (coming soon).
Increases signal amplitude from image sensor to SoC for improved link training margin.
Fixes a bug that could cause the ProRes Encoder to fail after several minutes of recording at max frame rate in 5K.
Adds on-camera playback.
To prevent media access contention, menus and recording are locked out when USB is connected. USB connection is locked out while recording.
Fixes a bug that would cause artifacts in the middle of the right edge of Ember clips on certain viewers, including Dropbox.
Fixes a bug that would allow the User FPS to be set higher than the maximum value at a given resolution and not match the actual recorded frame rate.
Initial release
When powered on in Standby and connected via USB-C, the camera should mount as an external storage drive with the name "EMBER A000" or similar. The recorded clips are in the root directory of this drive. If the drive doesn't mount when USB is connected, try the following troubleshooting steps:
If CODEX Device Manager is also installed on macOS, make sure the camera firmware is v2.2.50 or newer. Older camera firmware is not compatible with the CODEX System Extensions.
Unplug and reconnect the USB cable.
Try a different USB port on the host or USB dock.
Try a different USB cable. Make sure the cable is rated for at least 5Gbps.
Unplug the USB cable, power cycle the camera, then reconnect.
Unplug the USB cable, power cycle the host, then reconnect.
Confirm that the USB connection is indicated properly on the camera's HDMI on-screen display. In FW v2.x.x, look for "USB 3.0" in the bottom status bar. In FW v1.x.x., look for "USB3" in a pop-up. If this indication isn't present, or if "USB 2.0" is indicated instead, there may be a problem with the cable or the camera's USB-C port.
For further guidance, contact support@freeflysystems.com and provide the following information:
Camera type (S5K, S2.5K) and serial number.
Camera firmware version.
Camera SSD size (4TB or 2.56TB) and condition (e.g. empty, half-full, full).
Host details (e.g. MacBook Pro 14", M1, macOS Sonoma 14.5). If you tried multiple hosts, let us know which worked and which didn't.
If on macOS, a screenshot of the USB panel in System Information, with the Ember camera selected to show its details if it's present in the list of USB devices.
Which of the above steps you tried and if they worked or changed the behavior at all.
In this mode, clips recorded to the internal SSD can be browsed and played back for review. Navigate the playback menu using the Scroll Wheel and Select Button. Exit Playback Mode and return to Standby by clicking the Close Icon (×) in the bottom-left corner.
A brief description of Playback operation follows:
When entering Playback, the most recently recorded clip will be loaded. To change clips, select the clip number in the bottom left of the Playback menu and scroll through the list of available clips. The first frame of each clip will be shown while scrolling. Select a clip to load it for playback.
To start playing a clip, scroll to and click PLAY +1x. While playing, scroll right or left to change the speed of playback or rewind. Click again to pause.
Scroll to and select the frame number to enable frame scrubbing. Scroll right and left to scrub forward and backward. Click again to exit frame scrubbing.
Frequently asked questions Related to Ember App
Where can I find the app?
Freefly Ember App macOS Download
What version of iOS do I need for the Ember App?
You’ll need iOS 15.4 at a minimum, though we recommend iOS 17 or iOS 18.
Can I use Ember App on my Mac?
Yes, but only Apple Silicon Macs are supported. The M1-Pro, M1-Max and M1 Ultra – and any version of the M2 Processor, M3 Processor, or M4 Processor – supports all app features. The M1 Base Processor only supports Camera Control.
Which devices work with Ember?
We recommend these devices because they feature a minimum 5Gbps USB-C which the App can use to expedite exporting and other wired operations.
iPhone 16 Pro/Pro Max
iPhone 15 Pro/Pro Max
iPad Pro 11"/13" M4
iPad Air 11"/13" M2 (2024)
iPad Mini (6th Generation, 2021)
iPad Mini (7th Generation, 2024)
iPad Pro 12.9” (6th Generation)
iPad Pro 11” (4th Generation)
These devices are able to export, play clips and control Ember over WiFi, and slower speed wired connections, sometimes using adapters.
iPhone 16, 16 Plus
iPhone 15, 15 Plus
iPhone 14, 14 Plus, 14 Pro/Pro Max
iPhone 13, 13 Mini, 13 Pro/Pro Max
Which devices don't work with Ember?
iPhone 12, 12 Pro or older
iPad Pro without M2 Processor
iPad Mini, iPad Mini 2, iPad Mini 3, iPad Mini 4
iPad Air (before 2024)
iPad (base, any variant)
These devices, if capable of running iOS/iPad OS 15.4, will be able to do basic camera control and configuration through the Ember App, but will not be able to playback, or export video from Ember.
What’s the default WiFi password?
The default password for Ember firmware v2.0 and later is 'emberis#FAST'.
For cameras made before May 2024 or running firmware older than v2.0 the default password is ‘ember5k600’. If you’re having trouble connecting see how to reset Ember WiFi SSID (Wifi network name) and WiFi Password here or contact support@freeflysystems.com
How do I provide feedback?
Send an email to support@freeflysystems.com for all of your support needs including beta feedback for the app!
Does this work with Wave?
This app only works with Ember.
Can I use all my camera’s buttons when the app is connected?
Yes you can use your camera in the same way whether or not the App is connected.
How can I enter a custom FPS value?
To enter a custom FPS value you’ll open the FPS control in the app and select ‘custom’ Enter your Target FPS. It will be applied if your target FPS is supported by the other Recording Settings.
Can I connect multiple devices to my camera?
Only one iOS device can be connected to the camera for App control at a time.
Why can’t I export full resolution clips in H.264 format?
Due to limitations in the iOS, you aren’t able to export videos exceeding 4K UHD to the Photos App so we’ve removed the option, however you can export them to the Files App.
What’s the difference between markers and In/Out points?
Markers are designed to quickly allow you to select a part of a clip you wish to designate for export. In/Out points are properties of markers and allow you to set specific start and end points manually in ways that markers do automatically.
Can I export to an attached HD/SSD?
Yes. Right now you have to export the clip to the Photos app. Once the export is completed, a green ‘Share’ button will appear that will allow you to select “Save to Files.” Then from the Files App interface you can go to the top level file system and select an external drive. We plan to make workflow improvements to saving to attached disks this summer.
Can the App export clips in the background, while I do other things with my phone?
No, the app must remain in the foreground during export. Your iOS device will not sleep during an active export session.
Why does exporting a long video take so long?
Video export is constrained by the amount of time it takes to move data between Ember and the app. To maximize export speed, be sure to be on one of the faster WiFi channels, bring your iOS device as close to the camera as reasonably possible, and keep your iOS device cool in hot weather conditions.
Can I use Stabilization on a supported iOS device without USB-C?
Compatible Lightning devices can be connected to Ember or Disks containing Ember footage using a Lightning to USB Adapter. Lightning ports on iPhones operate at USB 2.0 Speeds, so there are some behavioral exceptions that happen when connected at slower speeds. Learn more here.
Where do I enter my WiFi password?
You’ll enter the WiFi Password in the Settings App on your iOS Device. To find the WiFi Name for your camera you can scroll to the end of the menu and it will be under ‘SSID/IP’ Select that WiFi network in the Settings app and it should prompt you to enter the password. After you’re connected, you can return to the Ember App.
How can I reset my WiFi SSID or password back to default?
You can reset the WiFi SSID and Password by using the ‘Default’ on the on-camera UI. This will reset all settings including the WiFi Name and WiFi Password without affecting clips stored on the camera.
How do I know which WiFi network to connect to?
To find the WiFi Name for your camera you can scroll to the end of the menu and it will be under ‘SSID/IP’.
What should I do if I don’t see the Ember WiFi Network?
The ember WiFi network typically becomes available about 30 seconds after the camera is turned on. If you’ve waited 30 seconds and the WiFi on symbol hasn’t appeared, You'll want to go to the ‘WIFI’ menu option on-camera and make sure your camera is set to ‘ON’.
What are the different WiFi channel options?
The WiFi channel options determine the frequencies at which the Ember WiFi network operates.
The following channels offer the highest bandwidth which can support App Playback and the fastest export speeds:
80 MHz 5 GHz Channel 44
80 MHz 5 GHz Channel 153
The other options balance bandwidth and distance allowing you to control your camera from further away and are as follows:
40 MHz 5 GHz Channel 149
20 MHz 2.4 GHz Channel 5
Last updated 2024-10-11
Amplify is an image processing technique in Ember App v2.1 that enhances or amplifies small movements in a video for easier visual recognition. This can be used, for example, to highlight and troubleshoot vibrations in a mechanical system.
Amplify works best when the source video has low noise and minimal background movement such that the region of interest where motion is occurring remains in the same place in the video. The frame rate should be approximately 5-20x higher than the highest motion frequency of interest. (In certain cases, frame rate aliasing can also be used to visualize even higher frequencies.)
Amplify requires at least 4GB of VRAM or Apple Shared Memory to operate at full resolution, though 16GB is recommended. Amplify is available on iPad and iPhone at up to 1/2 Resolution. 1TB iPad Pro with 16GB of RAM and compatible Macs are able to run at full resolution. Amplify exports at the selected resolution when added to the Queue.
The following subsections explain the adjustable parameters used by Amplify.
This determines which features sizes are considered for motion amplification. Small features are at the low end of the scale and large features at the high end. Good results can usually be obtained by leaving at the default settings of 0 - 8. For Height settings below 640, better results may be obtained by setting the high end of the scale to 7 or 6.
This is the amount of amplification applied to the motion. Settings of around 5 to 10 are usually quite good. Too high a gain can cause noise and unwanted artifacts to appear. A gain of 1 is equivalent to Amplify being turned off.
This is the frequency range over which motion amplification is applied. The left slider is a high-pass filter and the right slider is a low-pass filter. The high-pass filter is effective for removing any unwanted bulk movement in the video, for instance caused by slow panning or operator jitter. The low-pass filter can be used to reduce noise and improve the visual appearance of the video.
It is usually best to start with the low-pass filter fully to the right (off) and tune the high-pass filter for best visualisation of the motion. Then the low-pass filter can be used to reduce noise if necessary. Alternatively, if the frequency of the movement under study is known then set the range accordingly to bring out that motion.
Format
S5K at 5K or S2.5K at 2.5K
S35
Native Aspect Ratio
5:4
Pixel Size
S5K S2.5K
4.5μm x 4.5μm 9.0μm x 9.0μm
Native Resolution
S5K S2.5K
5120 x 4096 (21MP) 2560 x 2048 (5.2MP)
Active Area
23.04mm x 18.43mm
Shutter Type
Global Electronic
Sensitivity
ISO 100, 200, 400
Dynamic Range
11 stops
Standard Mounts
S5K S2.5K
Passive Universal Mount Active Locking EF Mount
Optional Mounts
Third-Party Mounts
Passive Canon RF, EF, FD Passive Nikon F Passive Leica M Passive LPL
Media
Internal NVMe SSD
Media Size and Type
S5K S2.5K
4TB TLC 2.56TB pSLC
Format
Apple ProRes 422 LT
Native Bit Depth
10-bit
Color Space
Sensor-Native RGB Rec.709 or HLG Beta OETF
Resolutions / Frame Rates
Bit Rate
Maximum 5120x2880, 600fps 4096x2160, 800fps 2560x1440, 2250fps (1) 2048x1080, 2900fps (1)
2.00GB/s 1.83GB/s 1.46GB/s 1.71GB/s 1.32GB/s
Continuous Recording Time
5120x2880, 600fps 4096x2176, 800fps 2560x1440, 2250fps (1) 2048x1080, 2900fps (1) Others
36min (4TB) 45min (4TB) 24min (2.56TB) 32min (2.56TB) Limited only by Media
2.56TB pSLC Only
1s - 2hr Circular Buffer Limited only by Media
(1) Ember S2.5K in full color or Ember S5K in monochrome.
DC Input Voltage
12V - 26V
Power Consumption
Standby 4K Max FPS 5K Max FPS
30W 50W 55W
DC Input
4-pin Molex Micro-Fit
HDMI Output
Type-A (Full-Size) 1080p24/25/30
GPIO
USB
USB Type-C USB 5Gbps
Wireless
Wi-Fi 5 802.11ac (5GHz)
Ethernet
RJ45 1 GigE
Firmware Update
via USB
Upgradeable Storage
Yes
On-Board LCD
No
Audio Recording
No
Dimensions
w/ Universal Mount
Width: 100mm Height: 104mm Depth: 86mm
Weight
w/ Universal Mount
852g
Mounting Points
1/4-20 M3
1x Top, 1x Bottom 4x Per Side
Operating Temperature
0ºC - 40ºC
Ingress Protection
IP52
The following table lists the Width (top row) and Height (left column) combinations supported by the Ember S5K in full color. Only Height affects the maximum frame rate (right column). Widths below 5K are center-cropped. Common aspect ratios are noted.
4096
5:4
1:1
-
-
436
3840
4:3
-
-
-
464
3072
-
4:3
1:1
-
578
2880
16:9
-
-
-
616
2560
2:1
-
-
-
691
2304
-
16:9
4:3
-
765
2160
≈ 2.37:1
≈ 17:9
-
-
809
2048
-
2:1
3:2
1:1
858
1920
-
-
-
-
913
1728
-
≈ 2.37:1
16:9
-
1011
1536
-
-
2:1
4:3
1131
1440
-
-
-
-
1203
1280
-
-
2.4:1
-
1346
1152
-
-
-
16:9
1487
1080
-
-
-
≈ 17:9
1569
1024
-
-
-
2:1
1661
864
-
-
-
≈ 2.37:1
1946
The following table lists the Width (top row) and Height (left column) combinations supported by the Ember S2.5K in full color and the Ember S5K in monochrome. Both use 2x2 pixel binning, but only the S2.5K has a matching Quad Bayer color filter array. Only Height affects the maximum frame rate (right column). 2K width is center-cropped. Common aspect ratios are noted.
1920
4:3
-
1751
1728
-
-
1929
1536
-
4:3
2118
1440
16:9
-
2277
1280
2:1
-
2531
1152
-
16:9
2779
1080
≈ 2.37:1
≈ 17:9
2922
1024
-
2:1
3080
864
-
≈ 2.37:1
3563
When a suitable SSD is installed, Ember has the ability to pre-record a user-set amount of time to a flash-based circular buffer. This allows for capturing spontaneous events without wasting a lot of disk space.
To use this feature, set the Pre-Record buffer time using the on-camera menu or App. Then, press the Record button once to arm the camera. While armed, frames are recorded to a circular buffer on the SSD. When the event happens, press the Record button again to trigger the camera. The current circular buffer frames are committed and recording continues normally until stopped.
pSLC flash has very high endurance, allowing it to handle long durations of armed circular buffer recording without wearing out. Other high speed cameras use large amounts of RAM for this purpose. By using pSLC flash, Ember can support much longer pre-record times and has no down-time for copying the buffer to flash. The following pSLC SSDs are compatible with the Pre-Record feature:
2.56TB Internal SSD (standard on S2.5K, optional on S5K)
2.56TB External SSD for use with Media Expander
1.28TB External SSD for use with Media Expander
Out of the Box and Setup
Download the latest Firmware Ember iOS App & Ember App FAQ
The Record Button and Select Button LED will display the following color codes:
Slow Flashing Green
Standby (Ready to Record)
Solid Yellow
Solid Red
Recording
Slow Flashing Magenta
Storage Status Busy (Mounting or Formatting)
Slow Flashing Red
Storage Status Bad, see camera UI for more info.
Fast Flashing Red
Fatal Error, try rebooting.
Solid White
Boot Error, try rebooting.
The camera is normally in Standby mode, ready to record. When in Standby, the settings menu lists image capture and camera settings at the top of the HDMI preview. Navigate the menu using the Scroll Wheel and Select Button. Hide the menu by clicking the Close Icon (×) in the top-left corner. Show the menu again by clicking the Select Button. Navigating the menu is disabled while recording.
Clicking Play Icon (►) in the menu will put the camera into Playback mode.
Most settings are preserved when the camera is powered down. A brief description of the individual settings follows:
Ember can shoot in a variety of resolutions and aspect ratios. The Width and Height of the frame are set independently. See Resolutions and Frame Rates for a list of Width and Height combinations matching standard aspect ratios. The selected Height also determines the maximum Frame Rate.
This menu shows a list of available capture frame rates for the selected height and Project Frame Rate. The first menu item (USER) is a custom frame rate that can be adjusted in increments of 1 fps. The second menu item (MAX) automatically selects the highest available frame rate. The remaining items are whole number multiples of the Project Frame Rate, plus some other common frame rates.
When using an NTSC Project Frame Rate, the available capture frame rates are divided by 1.001 to be whole number multiples of the Project Frame Rate. This is indicated by the unit "fps/1.001" next to the selected frame rate. For example, with a Project Frame Rate of 23.976, 600fps becomes 600fps/1.001 = 599.4fps, exactly 25x the Project Frame Rate.
The shutter angle can be used to adjust exposure and motion blur. To convert from shutter angle to exposure time, use the following formula:
For EF photo lenses, the lens aperture (f-stop) can be controlled with this setting. For EF cine lenses, the current T-stop is reported instead.
Three gain settings are available: ISO 100, 200, and 400. These can be used to adjust exposure. They are analog gains applied in the image sensor, not digital gains. Lower gains have slightly less noise in adequate lighting, but using ISO 400 is preferred over using a lower gain and pushing the shadows in post.
Ember ISO values are saturation-based; they do not depend on the OETF selected. For the same saturation-based ISO, the exposure level of middle gray still depends on the OETF selected, with HLG Beta exposing middle gray approximately one stop more than Rec. 709.
Ember supports two OETFs: Rec. 709 and HLG Beta. Only the tone curve is adjusted by the OETF setting. The color space is not transformed beyond white balance and will generally be undersaturated without further adjustment.
Rec. 709 uses the transfer curve of the Rec. 709 standard, which is a gamma of approximately 2.2 with a slope limit of 4.5x in shadows. HLG Beta is based on the Hybrid Log Gamma transfer curve, adapted to better fit this sensor. (Using a standard HLG LUT is not recommended). It boosts the shadows and flattens the highlights compared to Rec. 709, which helps preserve more dynamic range but may amplify shadow noise.
Color temperatures ranging from 2000K to 9600K are available for white balance. Ember is calibrated at 3200K, 5600K and 8000K. Tint (green/magenta) can also be adjusted ±10%.
The Project Frame Rate (Time Base) sets the playback speed of the recorded video, which gets encoded into the video file. Common project frame rates from from 23.976 to 120.000 are available, to simplify importing Ember videos into projects. The ratio of capture speed (Frame Rate) to playback speed (this setting) is the amount of slow motion applied. For example, a 600fps capture with a 24fps Project Frame Rate gives 600/24 = 25x slow motion.
Note: Changing Project Frame Rate may also change the HDMI output frame rate, which will cause monitors to resynchronize.
When a compatible SSD is installed, this setting enables pre-record buffering of between 1s and 2hr, depending on capture settings and available disk space. The selected value is allocated as a circular buffer when the camera is armed and overwritten continuously until the camera is triggered, at which point post-trigger recording continues until stopped. See the Pre-Record feature description for more details on this mode of operation.
The active SSD can be formatted (erased) from this menu. This is the only method of deleting files from the camera. When formatting, the Camera Letter and Reel Number for the next job can be set. The word "Formatting" will appear in the status bar while formatting is in progress. Formatting may take up to 60 seconds. Do not power down the camera during this time.
When a Media Expander is attached, this menu can also be used to Mount or Eject the external disk and to set which disk is used by default on boot.
Anamorphic Desqueeze can be applied to the preview image from this menu.
When the Media Expander is attached, this menu can also be used to select which display interface (HDMI, SDI) is configured as a Clean Feed.
The camera settings can be restored to their default values from this menu.
Wi-Fi can be turned on/off and set to a specific channel using these settings.
This menu displays the Wi-Fi SSID and both the Wi-Fi and Ethernet IP addresses of the camera, used for connecting with the App.
This menu configures the behavior of the camera's GPIO signals, which can be used for remote triggering or multi-camera synchronization. See Pinouts / Remote / Sync for more information.
The fan profile can be set to LOW, NORMAL, or HIGH based on preference. LOW can be used to keep the fan off for short clips or when in Standby. HIGH can be used to force the fans to maximum speed whenever recording is in progress. Regardless of the setting, the fans will turn on and adjust their speed when necessary to maintain system performance.
When a Media Expander is installed, its fan profile can be controlled with the "Backpack" setting in this menu with LOW, NORMAL, and HIGH options.
This menu allows the warning and cutoff voltages to be adjusted. The defaults (12.0V warn, 10.0V cutoff) are set for typical 4-cell V-Mount batteries. When the voltage drops below the warning level, an orange "LOW" indication will flash in the status bar. When the voltage drops below the cutoff level for more than five seconds, the camera will close the in-progress clip and safely shut down, to prevent data loss.
Set the time and date to be used for file timestamping.
Ember CAD to help you develop for the Freefly Ecosystem faster and easier!
Pinouts
Freefly P/N 910-00713 can be used to power Ember from a D-Tap power supply or battery output.
Freefly P/N 910-00661 can be used directly to connect Mōvi Pro, Mōvi XL, or Mōvi Carbon to the GPIO port on Ember. It can also be used as a donor cable for making a custom cable for remote start/stop or menu control (see below).
GPI2/RS can be used to create a simple remote start/stop trigger, either using a physical momentary switch or with active logic from a host microcontroller:
Since the GPIO interface is optically isolated, the host most also supply 3.3-5.0V power on VIN, to power its side of the optocoupler. The current drawn will be <20mA. GPI2/RS is pulled up to VIN in the camera, so the host-supplied power should match the logic voltage.
There are two options for remote start/stop behavior: RS EDGE and RS LEVEL, selectable in the GPIO Menu Setting or in the App.
In RS EDGE, the rising edge of the GPI2/RS signal toggles recording on or off. Debouncing and edge detection are handled on-camera. The minimum low pulse is 10ms and the minimum high pulse is 500ms. Pulses shorter than these values may be ignored.
In RS LEVEL, the recording starts on the falling edge of the GPI2/RS signal and continues until the rising edge. Debouncing and edge detection are handled on-camera. The minimum low pulse is 500ms and the minimum high pulse is 500ms. Pulses shorter than these values may be ignored.
The GPI2 and GPO2 signals can also be used for frame synchronization.
When SYNC OUT is selected in the GPIO Menu Setting, GPO2 will output a short negative pulse for each frame with its falling edge aligned to the start of exposure. The GPO1 signal will also output FPS settings and record start/stop commands to control other cameras.
When SYNC IN is selected in the GPIO Menu Setting, a falling edge on GPI2 will trigger the start of exposure of a frame (subject to minimum and maximum FPS constraints). This can be used to synchronize to another Ember in SYNC OUT mode, or to an external frame trigger source.
An external host can control the camera by transmitting a specific packet to the camera, which receives it on the UART Rx pin. The UART configuration is 115200 8-N-1. Packets may be sent only when user inputs are made on the external device (preferred) or on a regular interval up to 100Hz.
The following table specifies the packet used to remotely control the on-camera menu and start/stop recording. Numbers with an 'h' suffix (e.g. 51h) are hexadecimal values. Numbers with no suffix are decimal values. Characters in single quotes (e.g. 'Q') are ASCII characters.
0
'Q' (51h)
Start Byte 1
1
'X' (58h)
Start Byte 2
2
20 (14h)
The length of the packet between this position and the checksum, exclusive.
3
91h
Attribute ID 1: 80h | (10001 & 7Fh)
4
4Eh
Attribute ID 2: (10001 >> 7) & 7Fh
5
62h
Options Byte: Tells the receiver that the packet is unencrypted and does not require a response.
6
Mode
Reserved for future use. Must be set to 00h.
7
Record
State of the remote Record button: 00h = Not Pressed 02h = Pressed All other values reserved for future use.
8
Jog
Signed two’s complement value indicating the number of positions to jog (scroll) the on-camera menu or playback cursor. Positive values scroll right or down, negative values scroll left or up.
9
Select
State of the remote Select button: 00h = Not Pressed 01h = Pressed
10-22
Reserved
Reserved for future use. Must be set to 00h.
23
Checksum
This checksum byte is set such that the sum of bytes 3-23, mod 256, is 255 (FFh).
The Record and Select bytes are intended to represent remote Record and Select button presses. They should indicate the physical state of a button without any intervening logic. Edge detection logic is handled by the camera. The camera record state will toggle when the Record byte transitions from pressed (02h) to not pressed (00h). Recording can also be started on-camera and stopped remotely or vice versa.
The Jog byte is intended to represent a scroll-wheel-like function for navigating the menu, changing settings, or controlling playback speed. Jog values are accumulated across multiple packets. To scroll right or down by one position, send a jog value of 01h in only one packet. To scroll left or up by one position, send a jog value of FFh (-1 in two’s complement) in only one packet. A scroll wheel or encoder with 10-30 increments per revolution works well. If one isn’t available, D-Pad buttons can be used to send individual increments or decrements.
Covers basic connection over USB and Wifi
As of v2.0 You can connect the Ember App to your camera via USB for control, export and live preview. To get started you'll want to use a USB 3.0 Cable for the best performance.
Note: These instructions are valid for the macOS Ember App as well, but you'll select disks in the Finder instead of the Files app.
Then use the "Connect to USB Gallery" button.
This will open a File selection view. Use the button in the top right to access:
Access the SSD using Sidebar -> Locations -> EMBER A000 or the name of your Ember SSD.
Once selected the App UI will show the Disk and if it was a camera, the option to select the CTRL drive to enable USB Control.
Once you've selected Ember A000 with the 'Open' button in the top right you can use the "Select Ember CTRL drive" In the side panel, you should see a new "EMBER CTRL" disk. Select then 'Open'.
This app is now connected to the SSD for the fastest Playback and Export experience as well as Control and Live Preview.
Ember App will try to remember your selection, so for future sessions you'll be able to just plug in and get connected.
You can continue to Select an external disk to read Ember clips you've stored there to Export trimmed clips, or stabilize original clips or clips that have been trimmed though Ember App.
Updated 2024-05-22
As of FW 1.4 Ember is able to use Ethernet to connect to iOS devices and use all of the features of the Freefly Ember app. This Ethernet connection can be direct, or using a router.
Index
Some Notes
To connect to Ember directly with iPad, you'll need an Ethernet cable and an Ethernet to USB-C adapter.
Settings > Ethernet will only appear if your adapter has been recognized by iPadOS.
Make sure to use a 1000 mbit ethernet adapter and cable to maximize your connection speed to Ember.
Make sure your Ember and App are up to date before attempting an Ethernet connection.
Ember App will remember the IP address you last used for your Camera.
You'll need to reset custom IP Address to the Wi-Fi Address to re-enable Wi-fi connections to Ember from your specific device.
To connect the App to Ember over Direct Ethernet Connection, You'll need to assign your iOS device a manual IP address and Connect the App to Ember's Static IP address.
Ember will not assign the iOS Device an IP address, and will assign itself the IP address 10.42.0.2 for its Ethernet interface. To be able to use Ethernet with the iOS Device you'll need to manually assign your iPhone/iPad an IP address. This will only need to be done once.
To connect your iOS device, Open the settings app and navigate to
Settings > Ethernet > USB 10/100/1000 LAN > Configure IP
Select "Automatic" and switch to “Manual”
And enter the following values into the Manual IP fields and click’ Save’ when done
Bottom right of the Control Screen
Top right of the Monitor Screen
Once in Settings, navigate to Connect > Connection IP
For direct Ethernet Connections, You can just use the check mark to the right, to confirm the pre-filled static Ethernet IP Address, '10.42.0.2'
Ember may connect automatically using the Wi-Fi IP Address if Wi-Fi is enabled. For use with Ember with Wi-Fi 'Off' you'll need to use the Ethernet IP Address.
To connect the App to Ember using a Router Ethernet Connection, you'll need to connect Your iOS Device to that network and tell the App to target Ember's Ethernet IP Address.
Typically, your router will assign Ember an IP Address for it's Ethernet interface when you insert the Ethernet Cable; the same way your router assigns your other devices IP Addresses.
To continue, you'll need the IP address assigned to Ember under the SSID/IP > Ethernet IP on the on on-camera Menu if you scroll down.
Note: While Router Ethernet connections are typically great for control, additional wireless clients on a network will degrade live preview and playback frame rates, as well as export speed.
If Ember's Ethernet IP Address is 10.42.0.2, Restart Ember with the Ethernet Cable already inserted at both ends.
Configure your router to assign Ember a static IP address; Ember will be assigned the same IP address which the App will rembember and auto-connect to. Contact your network administrator to configure a static IP address for Ember.
Bottom right of the Control Screen
Top right of the Monitor Screen
Once in Settings, navigate to Connect > Connection IP
Router - A device that assigns IP addresses and routes network traffic to connected devices. Routers can connect Ethernet devices and Wi-Fi devices to the same network and talk to each other using IP addresses.
Updated 2024-05-22
Freefly Ember App v1.5 introduces post stabilization for Ember. Simply connect to your Ember with your iPhone or iPad and enjoy blazing fast stabilization for any of your shots.
Stabilization is available with the latest app release and can be applied to original or trimmed Ember clips recorded using Firmware v1.5.2. Stabilization is also available for original clips recorded with Firmware v1.4.14+.
Firmware v1.5.2 clips trimmed using QuickTime or “Quick Look” on Mac can be used with Stabilization.
ProRes 422 LT clips trimmed and exported by Ember App v1.5 from Firmware v1.4.14+ can also be used with Stabilization. Note: Playback/Export toggle must be set to 'USB' to export compatible clips. See below for use with compatible iOS devices with Lightning ports.
Press the "Connect" button to open the connection screen.
You can connect directly to Ember or a Disk with Ember clips using a USB Cable.
For optimal performance, a USB 3.0 (or USB 3.2 Gen 1) cable is recommended
Configure your Zoom and Smoothing percentages. Select your lens focal length. Stabilize.
Stabilization settings are independent between markers.
Export clips to your iOS Device's Gallery using 'Photos' as your export destination. For greater compatibility with 5K ProRes 422 LT exports, use 'Files' to export to the iOS File system, or to an additional device connected over USB.
Stabilization is only available over USB, and can only be used on clips recorded on Ember. The clips can be stored on Ember, or clips stored on external disks.
Using the Ember app you can trim 1.4.14+ clips and export them as 'ProRes 422 LT' and retain the ability to Stabilize them later using the Ember app. Playback/Export mode must be set to "USB".
100% Smoothing doesn’t equate to no motion, just a smoother path between larger camera movement with maximum jitter and high frequency motion removed.
Stabilization works best with low distortion lenses, distortion compensation will be coming in a future release.
While clips will export correctly stabilized, the Stabilization preview may be slightly out of sync in cases where 1.5.2 on clips that have been trimmed, or reading from a slower storage medium (i.e USB 2.0, or a Network Disk)
Please direct any questions or feedback to support@freeflysystems.com
The allows Ember to record to hot-swappable external media in the form of U.2 NVMe SSDs. This can greatly speed up workflows where offloading the internal SSD would normally be a bottleneck. Three external SSD options are available:
( capable)
( capable)
These SSDs also feature a built-in 40Gbps USB4 / Thunderbolt reader for fast offloading. They can be connected directly to a host computer with a suitable USB-C cable (one is included).
The Media Expander also provides an HD-SDI (1080p24/25/30) output for video preview and playback. The SDI output can be a clean feed or include the camera UI, based on the setting configured in the .
Ensure the camera is powered off.
Remove any battery mount hardware from the back of the camera.
Remove the rubber expansion port cover.
Align the Media Expander with the expansion port and push it flush with the back of the camera. Very little force should be required.
Install the three included M3 screws to hold the Media Expander to the back of the camera.
Re-install battery mount hardware to the back of the Media Expander. If necessary, use the four shorter M3 screws included with the Media Expander for this.
The external SSD must be removed from the camera in order to access files using its USB-C port. They cannot be accessed while the SSD is inserted in the Media Expander. Once removed from the camera, plug the external SSD into a suitable USB 4 / Thunderbolt port on a host computer for fast offloading.
Yes, the Media Expander is compatible with all existing and new Ember S5K and S2.5K.
When connected to a suitable USB4 / Thunderbolt host, the link speed is 40Gbps and practical file transfer speed is around 2GB/s. This is approximately equal to the maximum recording data rate. For example, a 30s (real-time) clip at maximum frame rate would take about 30s to offload.
We only recommend using our media, which we’ve tested to meet the write speed and power requirements of Ember.
No, the camera only mounts one drive at a time.
The hardware does support higher rates, but we're currently limited by FPGA resources available - most of the programmable logic is used for high-speed ProRes encoding. If we are able to optimize more in the future, higher resolution and/or frame rate SDI and HDMI options may become available. But for now, both are limited to 1080p24/25/30.
These inputs may be used for additional sync and trigger features in future firmware updates.
Frequently Asked Questions related to Ember Cameras
For most people the S5K is a great option and cheaper. If you have compelling use cases that demand faster imaging and don't need the 5K/4K resolution, then the S2.5K with its 2900FPS and pSLC drive is a great option.
With Ember Firmware and App V2.2, support was added for external media and SDI output with the Ember , along with new options, including multi-camera frame sync.
With Ember Firmware and App v2.0, support was added for the Active EF Mount lens control, (with compatible SSD), and cropped (color) and binned (monochrome) modes for S5K. This was also the initial release for Ember S2.5K.
See the page for a complete history of release notes.
The latest firmware is available on the page and the App is available in the App store.
Ember has 11 stops of dynamic range, which is less than a typical 24fps cinema camera. This is an inherent tradeoff of high-speed imaging. Imagine trying to count a few hundred coins on a table: your answer would be a lot more precise after five minutes than it would be after five seconds.
Plan your shots accordingly, avoid high-contrast lighting conditions, expose for the highlights you want to keep, and use fill lighting when able to increase exposure in shadows.
ISO 100, 200, and 400 are available. These are analog gains implemented at the sensor, with minimal noise tradeoff between the three. Although Ember S2.5K has 4x the pixel charge capacity of Ember S5K, the majority of the read noise is after charge-to-voltage conversion, so there isn’t a meaningful increase in sensitivity. You will need proportionally more light for S2.5K’s higher frame rates.
These are saturation-based ISO values. Using different OETFs will still change the exposure of middle gray. For the same saturation level, HLG Beta increases the exposure of middle gray by approximately one stop compared to Rec. 709.
Ember records to an internal NVMe SSD. There are two types of internal SSD available: a 4TB TLC (standard on Ember S5K) and a 2.56TB pSLC (standard on Ember S2.5K).
By analogy to film cameras, (capture) Frame Rate is how fast the film is pulled through the camera. Project Frame Rate is how fast the film is pulled through the projector.
A passive universal mount is included with Ember S5K.
An active EF mount is included with Ember S2.5K.
Yes, but you will need to send your camera back to the factory if you want active control of EF lenses. If you are OK with a dumb mount (for EF lenses with manual iris) you can buy the EF mount and bolt it onto Ember with no upgrade.
Sony asked us to no longer produce our E-mount; we agreed.
852 grams, with the passive universal lens mount.
1/4-20 top and bottom.
M3 and easily-mountable NATO rails on all sides.
0ºC to 40ºC
The camera is IP52 and can handle light rain, but is not waterproof.
The camera mounts as an external SSD when connected to a host via USB. Recorded clips are available in the root folder of the camera drive. Even at USB 3 speeds, offloading large clips can take a long time. We recommend opening clips in-place on the camera drive and exporting trimmed sections to a local drive if your workflow allows.
Physical slide switch for power on/off.
Illuminated record start/stop button.
High-resolution scroll wheel for menu navigation and playback scrubbing.
Select button.
1080p HDMI with on-screen display that can be hidden. An external monitor is required to operate the camera. There is no built-in LCD.
No. The front-facing ports are for future expansion but are not currently enabled.
Yes, there are several methods:
Long-range control when used on Mōvi Pro, Mōvi XL, and Mōvi Carbon through the Mōvi Controller.
Gigabit Ethernet, CAN, and PCIe interfaces are available for future expansion.
We are on a mission to build the smallest, fastest, lightest, most fun camera the world has ever seen. This brings us a bit closer to that goal.
Ultra tiny, ultra fast, ultra simple, ultra fun.
Continuous high-speed ProRes recording to non-volatile storage, limited only by storage capacity. No RAM buffer or trigger setup. It operates like a normal camera.
Really well! Tiny, global shutter, built super light and tough, and remote start/stop easily wired up to flight control of your choice with 46min record time.
4K 800fps images look dreamy, it’s like being in a Marvel film.
5K 600fps leaves some room to reframe/stabilize.
Fast and responsive UI.
Great form factor for gimbals, FPV. Cable entry on top is great for packaging.
Needs SO MUCH light.
It took us so long to get done.
Would like to have more dynamic range.
Llama, as long as the raccoon isn’t hopped up on matcha or adderall.
Sold separately by and
Sold separately by
See
Buffer Size
6-pin JST GH Optically Isolated
Armed ()
In Ember App, Navigate to settings using The Settings Toggle button which can be found in the following locations on iOS:
In Ember App, Navigate to settings using The Settings Toggle button which can be found in the following locations on iOS:
To stabilize a clip, create markers as usual. In Ember app v1.5+ You'll notice a new grey icon that will take you to Stabilization settings. This icon is green for clips that will be stabilized during export.
Users with are able to use Stabilization with an additional Lightning to USB Adapter. Because Lightning is Slower than USB-C, devices will experince some issues previewing Stabilization, however the output will be correct.
We reccomend , however Lightning on iPhones operate at USB 2.0 Speeds which can cause a known issue to occour.
When an external SSD is inserted into the Media Expander, it will automatically mount and become the active disk for recording and playback. The current active disk is indicated with an icon in the status bar and at the top of the . The active disk can also be formatted from that menu.
To switch back to the internal disk, select "Eject External" from the . This is also good practice before removing the external SSD, although not required. Do not remove the external SSD while Armed (for ), Recording, or Formatting.
Yes, the resolution and frame rate capabilities are the same as for internal recording. See for more details.
Yes, the camera can remain powered on when inserting and removing external media. Using the "Eject External" option in the before removing the external SSD is recommended, but not required. Do not remove the external SSD while Armed (for Pre-Record), Recording, or Formatting.
Yes, this configuration is also possible via the . The clean feed can be selected as SDI, HDMI, none, or both (App control).
Apple ProRes 422 LT in all . ProRes 422 LT maintains excellent image quality with only intraframe compression (approximately 6:1 compared to uncompressed RAW) and keeps the file size and data rate reasonable for high-speed imaging. ProRes 422 and ProRes 422 HQ may be added (at lower frame rates) in a future update.
Rec. 709 and HLG Beta tone curves are available. See for more details. There is no LOG profile for Ember because LOG recording typically requires at least 13 stops of dynamic range. Ember's 11 stops of dynamic range forced onto a LOG curve would either clip highlights at very low values or amplify shadow noise unacceptably. Rec. 709 and HLG Beta are a better fit for this sensor.
! We are using the GSPRINT4521 sensor (Normal version for S5K and Quad Bayer version for S2.5K) and it has been awesome. Gpixel also has been awesome to work with.
Yes, untreated sample footage is available (S5K) and (S2.5K).
With the , any Ember can also record to hot-swappable external media in the form of U.2 NVMe SSDs. Three sizes are available: 4TB TLC, 2.56TB pSLC, and 1.28TB pSLC. These SSDs also include a built-in 40Gbps USB4 / Thunderbolt reader for faster offload.
pSLC stands for pseudo Single Level Cell and is a type of flash storage that increases the endurance 10x or more compared to Tri-Level Cell (TLC) flash, at the expense capacity...learn more if you want to nerd out. The increased endurance allows Ember to support arbitrary-length circular buffer into flash.
Yes! The 2.56TB pSLC SSD is available for purchase (Freefly P/N ) and can be installed easily in any Ember running FW v2.0 or later.
You can trigger Ember with the App, the Record button, or wire in a custom trigger using the .
Yes, with firmware v2.2 or later. See for more details.
Capture is the recording speed of the camera. is the playback speed of the recorded clip, usually chosen to match the time base of a project for easy file import. The ratio of capture speed to playback speed is the amount of slow motion applied. For example, a 600fps capture with a 24fps Project Frame Rate gives 600/24 = 25x slow motion.
PL and PL with internal ND mounts are available from and in the Freefly store.
There are additional 3rd party mounts available from .
The Ember lens mount interface drawing is available on the page.
No, focus will still be manual, but can be controlled via the App, on-camera UI, or the .
In general, no. For example, you can't adapt an E-mount lens to an EF-mount body, because the flange focal distance of E-mount is shorter than EF-mount. If you have a manual lens that isn't covered by one of the available mounts, check if it can be adapted to RF, which has a relatively short flange focal distance of 20mm. If so, consider using the .
Look .
12-26V, and up to 55W for maximum frame rate in 5K. Look for battery and power connector options. The camera cannot be powered through the USB-C port. For continuous power, we currently recommend the FXLION battery, which can be charged via USB-C while powering the camera. A dedicated AC power adapter is also avaialble in the store.
The can be used to control the camera and view, trim, and export clips over USB, Wi-Fi or Ethernet.
A simple start/stop trigger can be implemented using the GPIO port. See for more details.
A host can fully control the on-camera menu via UART. See for the public interface definition.
IP Address
10.42.0.10
Subnet Mask
255.255.255.0
Router
[Leave Blank]
Wi-Fi Connections for Live Preview, Playback and Export
By Default Ember has a Wi-Fi access point called Ember-XXXXXX with the last 6 characters being a hexadecimal identifier unique to your camera. The default password is ‘emberis#FAST’
For Cameras built before May 2024, your wifi SSID may still be 'Ember-S5K-XXXXXX' and the default password is 'ember5k600'. 'Restoring Defaults' will update the SSID and Password to the new format and value.
You are able to change the default Wi-Fi Password and SSID using the App, and can reset them using the ‘DEFAULT’ button on the on-camera menu along with other camera settings.
Notes
Custom passwords must be >8 characters or they will be rejected by Ember
Restoring your camera to default will reset custom SSID/Password settings
Wi-Fi operates in the 2.4 and 5GHz spectrum on a fixed number of ‘channels’ which Wi-Fi access points operate on to provide service to users. Different channels have different abilities and we’ve exposed some of these channels under the CHANNEL option on the on-camera menu. Users with their WiFi connected device nearby should not need to change this setting. You may wish to make changes in specific conditions like the presence of another strong Wi-Fi connection operating in the same channel in your area, or to optimize longer range control.
Channel 44
5 GHz
80 MHz
Export, Preview, Control
433 Mbps
Channel 153
5 GHz
80 MHz
Export, Preview, Control
433 Mbps
Channel 149
5 GHz
40 MHz
Control
200 Mbps
Channel 5
2.4 GHz
20 MHz
Control
96 Mbps
Wi-Fi Bands The differences between 2.4GHz and 5GHz bands are in these different frequencies' ability to penetrate walls and other types of interference. 2.4GHz channels are typically superior to 5GHz channels in this respect.
If you are in an open space and want control from further away from your camera, you should consider disabling preview using the 2.4 GHz option.
Glossary
SSID - Service Set Identifier, this is the name of your Wi-Fi Network
Channel - A narrow band of wireless frequency allocated to the assertion of a wifi network and for communication to devices on that Wi-Fi network.
Updated 2024-05-22
