I'm working on smartphone cameras. I want calculate Field Of View of different smartphone cameras using the formula : FOV = 2 arctan(SensorSize/2f) where:
f is the focal length
sensor size is the Height or Width or Diagonal of the sensor (in mm)
In doing some research, I've found that there is another parameter to take in consideration, which is the crop factor. When using the formula for FOV, should I apply the given f (focal length), or should I apply the effective focal length which is (focal length x crop factor)?