Mamiya in fact used 56 back button 67mm.When evaluating the RB67 to complete framework 135 surveillance cameras there is certainly a so-called 'harvest factor' of a half. The 6x7 frame had happen to be launched and patented by Linhof (56 back button 72mmichael) and was defined as being ideal, as the negatives required really little cropping to suit on standard 10' a 8' paper. The RB67 quickly became widely used by professional studio professional photographers. Like the Linhóf Technika thé RB67 got a revolving back again which enabled photographs to end up being taken in either surroundings or family portrait orientation without revolving the surveillance camera, at the cost of additional pounds and bulk. Previous medium-format expert SLR camcorders used the square 6×6 cm format which do not require the video camera to be rotated and balanced for photos in portrait alignment, problematical with large and heavy camcorders when tripod-mountéd. Thé RB67, a large, weighty, medium-format surveillance camera with buiIt-in closeup beIlows had been innovative and successful.
Ln 1970, Mamiya presented the RB67 6×7 cm professional single lens response (SLR).
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