Mamiya RB67 telephoto providing 90mm equiv on 6x7 format with leaf shutter.
The Mamiya Sekor R 180mm f/4.5 is a telephoto lens for the Mamiya RB67 medium format system, providing approximately a 90mm equivalent perspective on the 6x7cm format. The RB67 system produces enormous negatives that reward telephoto lenses with extraordinary detail and the medium format tonal quality photographers prize.
Optical quality is good with the Sekor multi-coating providing accurate colour and good contrast at telephoto distances. On the 6x7 format, even moderate telephoto reach produces images with detail levels that smaller formats cannot match. The revolving back of the RB67 enables portrait and landscape orientation without rotating the camera.
Build quality is robust professional Mamiya construction designed for the substantial RB67 system. The lens features a leaf shutter for flash sync at all speeds. The RB67's bellows focusing system provides additional close-focus capability beyond the lens's own minimum focus distance.
On the used market, the Sekor R 180mm f/4.5 offers affordable telephoto capability for the Mamiya RB67 system. For RB67 photographers wanting moderate telephoto reach for portraits and landscape details, it provides the 6x7 format's extraordinary detail in a practical telephoto configuration.