Quote Originally Posted by redonnemoi
hi

is there an article or webpage out there that carefully compares and discusses the picture quality of all these different lenses? for example, compares all telephoto zoom lenses of a similar focal length range? i want the same for macro, if its possible.

thanks
Some magazines do that. I think Popular Photography website has an article on whether pricey lenses are sharper, better or something like that. Since you mentioned macro, Sigma 70 f2.8 seems to be the sharpest out there - sharper than micro Nikkor 105 f2.8 VR or Tamron 90 for examples - according to Pop Photo and also here http://www.slrgear.com/reviews/index.php.