Ability of a lens and camera to focus automatically on an object without the photographer having to turn the lens focus ring. Motors in the camera or lens combined with sensors and focus points determine the optimum focus for you.

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Is an amateur photographer and writer who enjoys sharing information with others. "Technical information sharing is a critical part of helping everyone become a better photographer. If you don't know it, you can't do it!" From Film to Digital, photography has changed a lot, but the idea of learning hasn't.

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