Nikkor 70-300mm 1:4-5.6G or SIGMA 70-300MM F4-5.6 DG MACRO NIKON

[hankejp]

So the sigma does have an internal autofocus? it will autofocus with my d40?

If you buy one with their HSM motor. I got the one with the HSM motor, which is built into the lens. Works pretty good. It can be a little loud once in a while, but not bad at all.


http://www.dpreview.com/news/0801/08013106sigma70300hsm.asp

http://www.bhphotovideo.com/c/product/549304-REG/Sigma_5A8306_70_300mm_f_4_5_6_APO_DG.html#features