Here are a few sites I recently found that provide, in my opinion, a reliable resource for information and technical data for Canon EOS lenses. Each site delivers their own unique strengths, whether it is historical, technical, or editorial in nature.
This page from photodo.com has over 900 lenses indexed, however it has not been updated since June of 2000.
This page from the photo.net site is specific to the EOS 300D and 10D, providing great visuals, a comment forum and good, concise summaries.
The Canon web page of course provides the most up to date EOS lens compilation (at least officially).
This link from the luminous-landscape.com website is a nice compendium of most of the L as well as a few of the EF series lenses, easy to navigate and includes URL's to images taken with some of the lenses.
This page from the photonotes.org website is good if you are looking for reviews primarily pertaining to the EF line, providing some good, comprehensive editorial for that series.
The B & H online photo/video/pro audio store is not just unparalleled as far as the sheer volume of items offered, but offers some very competitive prices on Canon lenses as well....
The Epinions.com site makes available user reviews and ratings as well as comparative pricing data on most Canon EF and L series available.
