I have a Canon 7D and I have the 24-105mm and 70-200mm zooms, but both are f4. I'd like to mount 28 and 50mm lenses from an old Nikon F2 for low light work.

Any issues with the mirror not clearing the mount?

Best adapter? Do the AF confirm adapters work well?

Best focus screen replacement to use with both AF and MF lenses?