I look at the third party lenses. But just can't seem to trust them that much. I do have 3 AF third party lenses. 1 - Sigma, 1 - Tokina, and 1 - Tamron. The rest of my lenses are Nikon. The Sigma had to go to repair, Tokina works just fine and is a good lens. The Tamron doesn't like the new digital bodies but still works. Focus hunts some on the new DSLR's.