I'm interested in a 501 CM with an 80mm lens. I prefer 100 ISO film with 35mm, but I guess I could deal with 400 ISO in place of carrying a tripod. So here's the question: what's the slowest shutter speed I can use (with 400 ISO) and still successfully hand-hold the camera? What if I use a monopod? I'm assuming f/2.8. If you feel strongly that I should not be shooting wide open with this lens, please provide alternative advice! And by the way, what's the best way to hand-hold a Hassie? Thanks!