The Complete Beginner's Guide to Autofocus: Single, Continuous, and AI Tracking Explained

Your camera’s autofocus system is doing more work than you probably realize. Every time you half-press the shutter button, a processor analyzes contrast patterns or phase differences across hundreds of points on the sensor, calculates the distance to your subject, and drives a motor inside the lens to bring that subject into focus. On a modern mirrorless camera, this happens in a fraction of a second. It is, by any reasonable measure, the most sophisticated thing your camera does on a shot-by-shot basis. 

[Read More]