You may be deluged with answers to that question, I assume you mean Nikon since you asked the question in the Nikon Digest. Here are a few lens test sites to keep you busy. Some sites are subjective evaluations and others use a standardized (or objective) test - take your pick. In alphabetical order : David Reuther - Grover Larkin http://utopia.knoware.nl/users/leover/nikon/nikkor.htm Michael Liu http://www.mir.com.my/rb/photography/hardwares/speciallenses/index.htm Photodo http://www.photodo.com Photozone http://www.cmpsolv.com/photozone Walter Pietsch http://wpxx02.toxi.uni-wuerzburg.de/~winstel/walter/nikon.html Regards, Bill Briggs [EMAIL PROTECTED]