Thanks, the uncompressed version is MUCH better looking, though. I submitted a feature request to have the ML preview display on half shutter while in Canon preview crop mode, but I'm not sure if its possible.
Depends on what you're framing, I find that if I keep the person's face framed in the upper right or left corner, it's almost always properly framed. Choose 2560x1200, or whatever max rez is, and it limits the rez to 2496x whatever height you pick