I'm gradually compiling my archive of lens tests
on the 1Ds and 1Ds II, doing the kind of Olympus v Zeiss v Canon tests that are hard to find elsewhere, with particular attention to wide angles in the 17-24mm range.
Your tests and contributions are welcome.
There is also an up to date list of EOS adaptor sources and compatibility information
And who would have thought after three years of testing that the last lens standing would be a Nikon zoom? Is my AFS 17-35mm really as good as a Leica 19? I can't quite believe how good this one is myself. Please tell me if I'm doing something wrong!