C41
Kodak Portra 400
Kodak Portra 400 is a professional C-41 color negative film known for flexible exposure latitude, natural skin tones, and fine grain.
View profileMedium Format SLR
Mamiya RB671970
- Mount
- Mamiya RB
- Years
- 1970–2005
- Weight
- 2700 g
- Shutter
- 1s – 1/400s
The RB67 ("Roll-film, Bellows, 6×7") is a fully mechanical 6×7 medium-format SLR. The defining feature is its **rotating back**: the film magazine spins on the body, so you switch between portrait and landscape orientation without tipping the camera. Focusing is by **bellows**, geared by twin knobs on the body; lenses don't focus internally. Leaf shutters live in each lens. No meter, no battery — pure mechanical.
Reference
Find film for your Mamiya RB67
Recommended film stocks for the — format your camera takes.
ISO 400
C41
Kodak Portra 160
Kodak Portra 160 is a professional C-41 color negative film with fine grain, soft contrast, and natural color.
View profileC41
Kodak Ektar 100
Kodak Ektar 100 is a fine-grain C-41 color negative film with saturated color and high sharpness.
Develop — film
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Before you buy used
- **Bellows light leaks** — the body bellows develops pinholes. Test in a dark room with a flashlight inside; replacement bellows are available.
- **Mirror release** — mechanical interlock can jam if you swap backs out of sequence (back winding lever and body winding lever must agree).
- **Leaf shutters** — slow speeds drift; CLA every lens.
- **Film back foam** — light leaks from disintegrated foam; replace.
- **Focusing screen brightness** — replace with an Acute-Matte for visibility.
- Service: independent shops; Mamiya parts are scarcer than Hasselblad parts but the RB is mechanically simple.
About this camera
The studio brick. 6×7 negatives, a rotating film back so you don't tilt the camera, and weight that pins you to a tripod.