Field of View Calculator
Work out the angle of view and how much of a scene your lens covers at any distance.
What is field of view?
Field of view is how much of the scene your lens and camera capture. It is usually given as an angle of view - horizontal, vertical and diagonal - and can also be expressed as the real-world width and height covered at a specific distance.
It depends on two things: the focal length of the lens and the size of the sensor behind it.
Angle of view vs coverage at a distance
Angle of view is a fixed property of a lens on a given camera, measured in degrees. Coverage is what that angle translates to at a set distance - for example, how wide a wall a 35 mm lens frames from three metres away. This calculator gives you both, so you can plan a shot before you arrive.
How sensor size changes field of view
The same lens sees a narrower slice of the scene on a smaller sensor, because the sensor crops into the lens's image circle. A 50 mm lens frames like a standard lens on full frame but like a short telephoto on APS-C. Select your sensor so the angles match your camera, and use the crop-factor tool to compare formats directly.
How this calculation works
Formula: AoV = 2 · arctan( d / (2f) )
where:
d= sensor dimensionf= focal length
Sources:
FAQ
What's the difference between angle of view and field of view?
Angle of view is the coverage in degrees; field of view is usually the physical width and height captured at a specific distance. This tool shows both.
Why does the same lens look different on another camera?
A smaller sensor crops into the image circle, narrowing the field of view - a 50 mm lens frames tighter on APS-C than on full frame.
How do I get a wider field of view?
Use a shorter focal length or a larger sensor. Moving back also fits more in the frame, but it does not change the lens's angle of view.
What focal length matches the human eye?
On full frame, roughly a 40-50 mm lens gives a natural, eye-like field of view; the exact figure depends on how you define the eye's usable angle.