Hello everyone, I recently bought a Nikon F5 and now looking into lenses. I will be shooting commercial and glamour shots. I have looked into Nikkor, Sigma, Tamron, and kenko lenses. I would like to know what lens would deliver that sharp quality. I thought about getting a Nikkor 24-85 f2.8 or f1.4. What do you guys think of New Sigma and Tamron lenses? Any suggestions on Macro lens? Thanks.