> For the complete documentation index, see [llms.txt](https://docs.freeflysystems.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.freeflysystems.com/ecosystem/payloads/a7r4-payload/calibration-and-tuning.md).

# Calibration and Tuning

## Balancing Procedure

* 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.

![](/files/oKGBwT5vXfx1t4KXfNoI) ![](/files/TuixvkgNDnNbavdFjbFA)

* 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.

![](/files/0lnxyXzN5zWZTKroIfwz) ![](/files/jDskOuKaWHAjPetjW0OI)

* Once the camera balance is correct, tighten the ¼-20 fastener as well as the two fasteners on the hotshoe.

{% hint style="info" %}
Ensure the lens cap is removed while balancing the payload!
{% endhint %}


---

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