This has probably been asked before but I can't find any similar questions so please excuse me if it's has been asked a million times.
I have recently inherited a Sigma 70-210 f.28 AF APO lens but it won't auto focus with my D40, is there a problem with the lens or is it just incompatible with the D40 AF system? The lens is in pretty poor shape so I'm wonder if a service would help it.
Are there other Nikon cameras with which it would auto focus?
Thanks for any insight.
Cheers,
Bob