jcolwell Offline Upload & Sell: On
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JR137 wrote:
.... Didn't Nikon put the AF motors in camera bodies for a period and it flopped? Great idea on paper, yet not so great in the real world.
That's a legacy thing. In the olden days, it was industry-standard for AF lenses to be driven by a motor in the body, for all major brands except Canon. Many brands produced first-gen AF lenses with the motor in the lens, but they were big and clunky. For example, ...
Canon lens museum, New FD35-70mm f/4 AF, https://global.canon/en/c-museum/product/nfd244.html
Putting AF motors in the lens was first introduced in 1987 (at least as a system) by Canon EOS (Electro-Optical System) with EF (Electro-Focus) lenses. Since then, most brands have migrated towards this approach.
Many modern cameras (e.g. D850) retain the body AF motor for backward compatibility with body-driven lenses. It's interesting to note that the D850 manual does not identify the screw-drive interface (at about 7 o'clock on the face of the camera mount), even though it's plainly visible in the manual drawings.
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