1976-80. (2-MS76) Same as the F2 except the body is made of titanium, and uses DE-1T prism. Hot shoe can be added with optional accessory AS-1. PC sync terminal, shutter speed range 10 sec to 1/2000 plus T & B, flash sync at 1/80, self timer. Multi-exposure capability, mirror lockup, interchangable prisms and focusing screens, removable back, DOF preview, flash ready light in finder. All shutter speeds mechanical; batteries needed only for flash ready signal or optional meter/finder. Optional motordrives MD-1, MD-2, MD-3. Backs: MF-1, MF-2, MF-3, MF-10.