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Is there any difference between using only the AF/MF switch on my camera (Nikon D90) or using the AF/MF switch on my lens (18-105mm)?

Could having autofocus on my camera switched to manual focus harm my equipment if the lens has autofocus turned on, or vice-versa?

Thanks in advance.

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1 Answer 1

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There isn't.

Nope, it won't harm your gear - if either switch is set to off, your AF will be off.

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    \$\begingroup\$ That being said, if your lens doesn't have a clutch to let you adjust focus manually, you might damage your lens if you turn off autofocus in-camera, leave the lens switched to A, and really crank on the focus ring. \$\endgroup\$
    – Evan Krall
    Commented Jan 14, 2011 at 7:05
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    \$\begingroup\$ Specifically for the D90, the (in)famous Ken Rockwell has a guide to the D90s AF settings. \$\endgroup\$
    – gerikson
    Commented Jan 14, 2011 at 10:37

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