

The orientation is shown in the viewfinder with a combination of black and red lines, the latter indicating landscape orientation. : 81 The RB67 takes backs which can be rotated 90 degrees to provide a horizontal or vertical composition. The RB in the name stands for "Rotating Back", a concept dating back to early Graflex cameras as early as 1907. Multiple exposures are possible in the M-mode. Special-purpose film backs allow for motorized operation, 6x8cm exposures, or use of 70 mm film or Polaroid film. The camera accepts 120 and 220 film, with interchangeable film backs configured for exposures of 6x7cm or 6x4.5cm. It is a completely mechanical camera requiring no batteries. Focusing is performed with a bellows on the body. There is no shutter in the RB67 the Sekor lenses have built-in mechanical leaf shutters which are cocked and triggered from the body. It is primarily designed for studio use, but can also be used in the field. The RB67 is a modular camera system, meaning lenses, viewfinders, ground glasses, film winders and film backs are all interchangeable.

RB67 FLICKR GALLERY PROFESSIONAL
There are three successive models: the RB67 Professional (first model released in 1970), RB67 Pro-S (released in 1974) and RB67 Pro-SD (released in 1990). However, the RB67 differed visually from other 6x7 cameras of the time, which resembled very large 35 mm cameras.

The RB67 Professional was introduced in 1970 with a similar look to conventional medium format SLR cameras like the Hasselblad, but was larger due to the 6×7 cm frame format, closer to the typical 8×10 inch aspect ratio of portraits. There are three successive models: the RB67 Professional (released in 1970), RB67 Pro-S (released in 1974) and RB67 Pro-SD (released in 1990). The Mamiya RB67 is a professional medium format single-lens reflex system camera manufactured by Mamiya.
