Similar to 139 Quartz except: no manual shutter speed setting, cloth shutter rather than metal, and has built-in auto winder (2 fps, manualrewind). TTL flash metering, aperture priority, LED meter display, AE lock, dedicated hot shoe. Quartz timed electronic shutter. Shutter speed range 11 sec to 1/1000 plus B, X sync at 1/60 (1/60 and B are mechanical settings), self timer. ISO range 12-3200. Removeable back, DOF preview, electronic cable release. Backs: Data Back 137. Recommended flash: TLA 20, TLA 30. Grip Adapter and Power Pack 137 available.