The Lens Price Database, Lens$db, at www.jcolwell.ca has prices and physical specifications for over 400 lenses and other stuff, including: all Canon EF prime lenses; all Canon EF L-series zoom lenses (plus a few others); a variety of lenses from Sigma, Tamron and Tokina; a large selection of “alternative” manual focus lenses from Carl Zeiss Contax, Leica, Nikon, Pentax, and other brands; plus, other stuff including: EOS pro and prosumer DSLR cameras, teleconverters, and flash; and, a selection of Medium Format 645 and 6x6 lenses that are more-or-less compatible with EOS cameras. The prices are mostly for used equipment in excellent to mint condition, based on eBay sales and list prices at over 50 camera stores.
