Work out field of view (camera) instantly with clear inputs, formula shown and shareable results.
Angle of view is twice the arctangent of half the sensor dimension over the focal length, and the covered scene width is twice the distance times the tangent of half that angle. Field of view depends on sensor size as well as focal length, which is why a 50 mm lens is standard on full frame but a portrait lens on a crop body.
Angle of view
FOV = 2 x arctan(sensor dimension / (2 x focal length))
Scene coverage
coverage = 2 x distance x tan(FOV / 2)
FOV = 2 x arctan(sensor dimension / (2 x focal length)). Angle of view is twice the arctangent of half the sensor dimension over the focal length, and the covered scene width is twice the distance times the tangent of half that angle.
Field of view depends on sensor size as well as focal length, which is why a 50 mm lens is standard on full frame but a portrait lens on a crop body.
Enter focal length, sensor width, sensor height, subject distance. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.