Lens Angle of View Calculator

Note: This is version 1.0 of the lens calculator. The latest version may be found here.

Use this calculator to view the angle of view of a lens. The angle of view depends on the focal length of the lens, and on the size of the sensor (or film) upon which the image is being projected (see the formula below for more).

The lens calculator draws from a database containing most of the lenses currently being made by the likes of Canon, Nikon and Sigma, as well as a generic catalogue of popular lens focal lengths. Sensors include 35mm film, APS, medium format, and most of the current Digital SLRs on the market.

To use it, simply select a lens from the list, select a reading direction (horizontal, vertical or diagonal), and select a sensor type. The angle of view of the lens for the given combination is drawn on the adjacent graph.

[Calculator removed: please use the current version]