At the beginning I also didn’t understand why I had undefined images, I purchased various compatible cameras and many lenses up to 180° wide angle, but always blurry images. So I started to change the focus of the lens by rotating the lens counterclockwise, and depending on the type of lens I mount, I have to give more or less degrees counterclockwise, from 30° up to 90°. In the end I mounted the explorehd camera which has an excellent white balance, with a 110° lens which is approximately the same aperture as my GOPRO11 so that I film with the GOPRO11 what I see with the explorehd of the BlueROV2. Also look at this post of mine from 2022
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