Well, the 5D arrived last night and I took some quick test shots. Everything is good except for one problem. My adapter Pentax 50/1.4 is hit by the mirror when focused to infinity. A common problem that some have and some don't do to differences in tolerance with the 5D's mirror. Now the decision is, shave the mirror or shave the lens. The Contax 28/2.8 works fine which I am very glad of. I'll have to see how the corners hold up though. I'll test it all thouroughly this weekend if I can find time. I have exams to study for, 4 large prints to make for buyers, and 100 4" x 6" small mammal prints I am donating to a local event to be given to the kids. Sure wish the weekends were longer, LOL!!