Sunday, December 4, 2011

What type of lens will auto-focus on Nikon bodies without a focus motor?

Question

I know my D40 doesn't have a motor in it to auto-focus lenses.

What type of lens has the motor in it? How can I know which lenses will and will not work?

Answer

  • Nikon with AF-I and AF-S

  • Sigma with HSM (and older ones that list as "with motor for Nikon" or the like obviously)

  • Tamron with USD (and older ones that list as "with motor for Nikon" or the like obviously)

  • Tokina lenses specifically listing "built-in AF motor drive" as a feature

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