Loosen both fasteners in the camera hotshoe as well as the ¼-20 fastener with the washer so the camera is free to slide forward/backward.
Hold the gimbal by its Pan/Roll arms and ensure the tilt motor can spin freely.
Shift camera forward/backward in its slot until the camera does not tip up or down when it is positioned horizontally and released.
To ensure the camera is very well balanced, test pointing the camera ~30 deg up/down; a well balanced camera will also not move in either of these two positions.
Once the camera balance is correct, tighten the ¼-20 fastener as well as the two fasteners on the hotshoe.
Ensure the lens cap is removed while balancing the payload!
This is a set of example calibration values for the camera and lens system. Each lens is slightly different, but these values are good initial values if the software in use can't solve them directly.
Sony Alpha 7R IVA with Sigma 24 mm lens at F/5.6
| Parameter | Value |
|---|---|
Focal Length (mm)
24.351
Principle Point X (pixels)
4714.485
Principle Point Y (pixels)
3172.286
R1
-0.017
R2
0.071
R3
0.009
T1
0.001
T2
0
