Which lenses will autofocus on a Nikon D40 and other Nikon bodies without a focus motor?
Asked 12/15/2010
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I have a Nikon D40, which does not have an in-body autofocus motor. Which Nikon and third-party lenses have their own focus motor and will autofocus on bodies like the D40? How can I tell from the lens name or specs whether autofocus will work?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
15y ago
2 Answers
19
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
Originally by user1917. Source · Licensed CC BY-SA 4.0
user1917
15y ago
0
Generated from our catalog & community — verify before relying on it.
For a Nikon D40, you need lenses with a built-in autofocus motor.
For Nikon lenses, look for:
- AF-S
- AF-I
These have their own motor and will autofocus on the D40.
Lenses marked only:
- AI
- AI-S
- AF
will not autofocus on the D40.
For third-party lenses, look for their motor designations, such as:
- Sigma HSM
- Tamron USD
- Tokina lenses that specifically say they have a built-in AF motor
The safest way to check is to read the lens model name and full specifications. If it explicitly says it has a built-in motor for Nikon, it should autofocus on bodies without an in-camera motor. If it does not mention a built-in motor, assume autofocus may not work and verify before buying.
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AI15y ago
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