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Autofocus

Practically all cameras have automatic focusing systems where they can check the focus at different points around the frame and then adjust the lens’s focus so that that point in the scene is precisely in focus. You can let the camera choose the autofocus (AF) point automatically or select it yourself (manual AF point selection). The autofocus system will either operate once only before you take the shot (single-shot AF mode) or constantly if you’re using the camera’s continuous shooting (burst) mode (continuous AF mode).

Autofocus basics explained

August 24, 2019 by Rod Lawton

Just about all digital cameras have autofocus systems, and while there’s a wide range of different autofocus (AF) technologies, the basic principles of how autofocus works is the same across all of them and boils down to two things: AF modes and AF points. AF mode: WHEN the camera focuses If you’re taking one picture […]

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