Tools › Lenses & cameras
Field of view
Slide through the focal lengths and watch the frame on the scene shrink and grow. The angle of view is given across, up and diagonally, for the sensor you choose.
How it works
Angle of view = 2 × arctan(sensor size ÷ (2 × focal length)). The drawing compares your frame with what a 14 mm lens on full frame takes in.
On a smaller sensor the same lens sees less: a 50 mm on APS-C frames like a 75 mm on full frame.
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More tools
Depth of field
How much is sharp: near and far limits, hyperfocal distance and how blurred the background gets.
Crop factor & equivalenceFull-frame equivalent focal length and aperture for every sensor size, both ways.
Diffraction limitFrom which f-number stopping down starts to soften your camera's pixels.
Handheld shutter speedThe slowest speed for sharp handheld photos with your focal length, sensor and stabilisation.