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Key terms: af camera systems sensor autofocus canon light nikon optical lenses subject passive active contrast manual base measurement speed digital af sensors method achieved focusing array precise canon eos photography slr cameras mirror adjust generally typically optical system phase detection accuracy intensity passive systems correct focus reflex camera af systems integrated infrared light sound waves systems may photographic active systems first autofocus contrast measurement maximum aperture distance to the subject Search external links cited by footnotes on Wikipedia page Autofocus: |
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