Godfrey wrote: > Canon's lenses are state of the art mechanically. The ring motor USM > mounts are excellent.
Thats debatable. Some of their lenses are crap mechanically. Every Leica lens surpass them and their best are no better than the competition from Nikon, Minolta, Pentax and Olympus. Also, their lens mount contacts don't stand up to wear very well. I've seen an EF 100 Macro where the contacts was litterally worn away after about 2 years of use.... Pål
