For reasons that are inappropriate to the general atmosphere of APUG, I have had to buy a digi Rebel XTi (required for work). Instead of the tinkertoy 18-55 EF-S kit lens, I opted for the 24-85 EF USM. My 35mm stable today consists of two A-1s, neither one of which gets picked up anymore since the acquisition of the Mamiya RB Pro kit. I am thinking that it would be a nice addition (likely GAS, but who cares) to have an EOS film body that can use any of the lenses I acquire for the XTi. What is out there in the current "used" market that is full featured and functions well with the EF series of lenses? I have heard that there is some issue on full frame formats toward vignetting. Do I need to start considering the L series lenses in order to do cross purpose?