Posted here for posterity... The differences between the Mamiya 7 and 7II rangefinder cameras.
- A relocated cable release socket (The 7's is by the button release, the 7II is on the lower side of the left hand grip).
- An improved darkslide curtain winder. The 7II has a flip down winder, the 7 has a recessed knob. You have to remove the 7 from the tripod to engage the curtain and change a lens. The RRS tripod plate comes pretty close to this knob. You may not find this a pain if you use the Mamiya tripod adapter or something else.
- A different type of button arrangement on the exposure comp. The 7 is a 2 button control (one to release the lock) where the 7II is a single button for lock release and adjustment (push then turn).
- The 7II has an (arguably) improved viewfinder.
- The 7II has multiple exposure capability.
- The 7II has a chrome plated battery cover, the 7's is black.
- The 7II has the word MAMIYA embossed in raised letters on the left hand grip. The rubberized material for the grip is the same, though.
- The 7II has an extra (third) strap mount so the camera can be hung vertically.