Well, the focal length on

#189918
AvatarRob
Participant

Well, the focal length on your camera is variable because your camera zooms. So to figure out how wide your camera can go with an adapter, use 2.8mm in your calculation because 2.8mm is your widest focal length.

I’m not sure if a 90 degree angle will make your image look like a fisheye. I never got into details like that. I just shoot what looks good.

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