Steven Lust , Jan 07, 2002; 04:46 a.m.
You can use leaf shutter lens with the 645 Pro TL providing up to 1/500th second flash synchronisation. There are 2 or 3 available. I'm not sure if they allow for focal plane shutter use as well, someone else can answer that !
I have the 645 AF. I find the autofocus mostly annoying for portrait work as the depth of field is quite small. Unless your subject is perfectly still the autofocus is forever searching.
I've not had film flatness problems with either 120 or 220, but I tend to shoot the entire roll within a day or so. Perhaps if it stays in the RFH for longer periods you may experience problems, I can't say.