Compute the field of view in degrees from focal length and sensor size.
The angular field of view follows an arctangent relation between the sensor side length and twice the focal length, computed for three axes. The same lens sees a very different scene on full frame versus a crop sensor, so angles of view help choose lenses for a given framing.
Lens Angle of View
Angle of view = 2 x atan( sensor dimension / (2 x focal length) )
Angle of view = 2 x atan( sensor dimension / (2 x focal length) ) The angular field of view follows an arctangent relation between the sensor side length and twice the focal length, computed for three axes.
The same lens sees a very different scene on full frame versus a crop sensor, so angles of view help choose lenses for a given framing.
This calculator takes 2 inputs: Focal length, Sensor. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.