10-05-2015 04:34 PM
Okay, thanks. I'm just a part-time math guru.
FYI, I've found a formula to convert focal length to FOV. The formula that it implements is FOV = 2 arctan (x / (2 f)), where x is the diagonal dimension of the sensor. The FOV is measured across the sensor's diagonal, and is therefore smaller across the horizonal dimension, and even smaller across the vertical dimension.
10-05-2015 04:53 PM
It's not that hard. Just remember 46 is normal. Anything below is WA and anything above is tele.