Hi,
Exacerbated by the lack of a decent wide angle for use with the 5D for landscapes, I'd like to go the adapter route and try out some other makes of lenses. I hear and have seen fabulous reviews of the Zeiss 21mm lens, but it's out of my price range.
Has anyone used the Leica 21mm F4 R lens on the 5D? I know it's compatible with the mirror, but haven't heard from anyone what the quality is like for sharpness / landscapes.
It's a shame that Canon does a nice job of lenses from 35mm upwards. I'm very happy with the 50 1.4, 85 1.8, 100 macro. But anything sub 35mm is soft.