Del goes "full frame." Canon 5D MK "original"

Uh, no it doesn't.................I can't "think" what you are thinking of. I can set up say, the 300 2.8L for some photo on one camera and with the same settings stick it on the other, crop to full, and it will within limits take the same exposure

I can set the 24-105L up for some shot, and swap between the 7D and 5D with manual same settings and within reasonable limits it exposes the same.