Hi, I’m currently working on a project and I’m trying to find the focal length for the camera. The diagonal FOV is 68.5 but I can’t find any more information than that. Please Help!
From our rough testing, we got 333.82. You can calculate this by finding the width of an object of known size in pixels at a fixed distance. We used an 8.5x11 sheet of paper and counted pixels in paint. This value worked for rough testing, but we’ve since moved on to a different calculation that doesn’t require the focal length.
We did it in feet and got about 0.814 ft. I’m assuming the 333.82 is in pixels?
Correct. Here’s the guide we followed.