Sensor Crop Factors

Crop factors for common sensor sizes:

Full Frame: 1

APS-C: 1.5

APS-C (Canon): 1.6

APS-H: 1.3

Medium Format (Digital): 0.79

Medium Format: 0.64

How to use the crop factors:

To find the full frame equivalent focal length and maximum aperture of a lens, multiple by the crop factor.

Examples:

Nikon AF-S DX 16-80mm f/2.8-4E ED VR is equivalent to 24mm-120mm ~f/4-5.6

Fujifilm 110mm f/2 is equivalent to ~85mm f/1.5