Learn Photography

Free, hands-on tools and plain-language guides from a working photographer. Move a slider, watch the picture change, and the ideas stick.

Everything here is built to be used on a phone as well as a computer. Start with a tool below, then read the guides that go with it.

Depth of field simulator

Change aperture, lens, sensor and distance and watch the background blur and the sharp zone change, with a hyperfocal distance calculator.

See how much of a scene fits in the frame for any lens and sensor, with the equivalent focal length and the width at any distance.

Balance aperture, shutter speed and ISO for the light you are in, and see what each one does to blur, motion and noise.