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.


1 Answer 1


There isn't.

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

  • 2
    \$\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
  • 1
    \$\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

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.