Two versions: Mark I, Mark II.
Mark I: early Leicaflex Standard cameras that have a piece-of-pie-shaped exposure counter window, and the tripod bushing is fixed to the baseplate with three screws.
Mark II: Later Leicaflex Standard cameras that have a round exposure counter window and the tripod bushing is an integral part of the baseplate. Also added, a meter switch-off; push the advance lever against the camera body.
Non-TTL manual metering, CDS cell.
Centerweighted metering pattern, equal to approximately the viewing angle of a 90mm lens.
Match needle metering display, shutter speed info visible in VF.
Accessory shoe on prism.
Separate M and X sync PC terminals.
Shutter speed range: 1 sec to 1/2000 plus B, electronic flash sync at 1/100.
Horizontal moving, cloth, mechanically operated FP shutter.
ISO/ASA film speed range: 8-6500, set manually.
Manual film advance and rewind, single stroke advance lever.
Auto-reset frame counter.
Multi exposure possible.
3 mode mirror lock-up operation allows for instant mirror return, or mirror locked up after and/or before exposure.
Battery housing in pentaprism.
With optional Adapter Ring 14127 Visoflex II and III lenses and focusing mounts can be used, with stop down metering.