Pentax 67 Lenses

Pentax 6x7 / 67 medium-format SLR mount, introduced in 1969 | 6x7 medium format roll film

Pentax 67 began as the Asahi Pentax 6x7 and brought 6x7 roll-film negatives into an SLR body shaped more like an enlarged 35 mm camera than a studio cube. The system used a focal-plane shutter, interchangeable prisms, and a wide lens family.

The mount has inner and outer bayonet arrangements to support lenses of different sizes, with famous optics such as the 105 mm f/2.4 standard. Because the body uses a large mirror and focal-plane shutter, the system differs strongly from leaf-shutter 6x7 cameras such as the Mamiya RB/RZ.

For catalog comparison, Pentax 67 lenses represent medium-format SLR design where handheld field use and shallow-depth portrait rendering are central. They must cover a large image circle while preserving reflex clearance in a body that behaves like a giant 35 mm SLR.