Is this lens compatible with a D3100?

[Gary Kinghorn]

Sigma 70-300mm F4-5.6 APO DG Macro

Specifically will it AF please?

 

[Steve Smith]

The one you linked to is for Canon but according to this review...

http://www.dpreview.com/news/2008/01/31/sigma70300hsm

It has a built in focus motor,,, so the answer is yes - but make sure you find one with a Nikon mount.


Steve.

 

[Gary Kinghorn]

Link came up automatically, but thank you for the reply. I'm not a Nikon man, so this stuff is alien to me.

 

[Steve Smith]

The first Nikon AF cameras had the focus motor in the body. It couples to the lens using a fitting which looks a bit like a flat blade screwdriver.

Later Nikon lenses have the motor built in.

The higher range of Nikon cameras will work with either type of lens but the smaller, more entry level models don't have the focus motor in the body so it needs to be in the lens.


Steve.

 

[TCR4x4]

Sigma 70-300mm F4-5.6 APO DG Macro

Specifically will it AF please?

Depends on the exact lens. Sigma lenses need HSM in the title to AF with the non motorised bodies.

 

[Gremlin]

Depends on the exact lens. Sigma lenses need HSM in the title to AF with the non motorised bodies.

As above, the earlier sigma 70/300 didn't have a focus motor in the lens