>I did read somewhere recently that af in low light can be >less optimal if using a 3rd party lens, rather than a Nikkor. >That's not to say bad, just not as good as it could be. > >Thinking about it, I did have some issues with my 600 and a >Tamron 28-75 f/2.8 at a recent boudoir shoot (very low light), >while a pal of mine didn't have the same with a d200 and his >nikon 50mm f/1.8 > >I think I might try and replicate the scenario to see if I can >*ahem* shed some light on the situation
Besides the larger aperture of the Nikon which would alone focus better, I did have experiences where a Tamron would search for focus significantly more than a comparable Nikon So I agree with you.
"Cameras and lenses are simply tools to place our unique vision on film. Concentrate on equipment and you'll take technically good photographs. Concentrate on seeing the light's magic colors and your images will stir the soul." Jack Dykinga