PetaPixel The Anatomy of Autofocus: How Cameras and Lenses Achieve Perfect Focus

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Autofocus (AF) is one of the most significant advancements in the history of photography. From the first autofocus camera -- the Konica C35 AF in 1977 -- to the first true autofocus ILC, the Minolta Maxxum 7000. Although manual focus still has its devotees -- especially in genres that reward deliberation, such as macro, landscape, or vintage shooting -- autofocus has become the default expectation for most modern photographers.

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