Not sure if this should be in the lens or camera section, but I believe it is more appropriate here since I think it's a camera issue.
I have successfully used a Sigma 105 2.8 DG macro on my current D600 and old D90 and before that on a D80.
When I mount it on the D7th the camera will not turn on at all. I've tried setting this as a non-CPU lens with the appropriate specifications. The aperture ring is locked at 32. Still, no response. I have a variety of lenses that work just fine. This is the only one that does not work.
#1. "RE: D7th and Sigma lens" In response to Reply # 0
If it worked on the other bodies, it should work on the D7k or D7100. My first guess is that there is something wrong with a contact on either lens or body, perhaps just dirt. But if not, call Sigma. They are friendly and are good at assuring that backward compatibility problems like this are addressed.
_____ Brian... a bicoastal Nikonian and Team Member
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