I recieved a new Hasselblad kit earlier today that I bought off the Apug classifieds!

I think i'm in love, the mechanical feel of precision is all over this camera, and i already have a roll of film hanging to dry

However I do have a quick question about CF lenses... What does the F shutter speed setting do? Is it for Flash? Wouldn't that be really redundant with leaf-shutter lenses?