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Kodak Portra 400 is a professional C-41 color negative film known for flexible exposure latitude, natural skin tones, and fine grain.
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Mamiya M645J1975
- Mount
- Mamiya 645
- Years
- 1975–1982
- Weight
- 870 g
- Shutter
- 8s – 1/500s
- Meter
- ttl-cds-center-weighted
The Mamiya M645J (1975) is the introductory model of Mamiya's M645 system — the Japanese camera industry's first commercially successful 6×4.5 cm medium-format SLR. Where the M645 1000S offers an interchangeable finder system, the J is simplified: a fixed waist-level finder, no interchangeable magazine, and a shutter range limited to 8s–1/500s. It accepts the same Mamiya 645-mount lenses as all other M645 bodies, giving the owner access to an extensive range of primes and zooms developed over the system's 30-year lifespan.
Reference
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Before you buy used
- **Metering** — CdS meter; test with batteries installed and compare to phone meter.
- **Shutter accuracy** — 1/500s may be slow; test and have adjusted if needed.
- **Mirror lock-up** — not present on the J; factor in mirror vibration at slower speeds.
- **Film back light seals** — inspect foam at the door perimeter for crumbling.
- **Focus screen** — split prism; verify the central element is clean and split properly.
- **Lens coupling** — aperture-coupling pin on mount; ensure it moves freely.
- **Waist-level finder** — the pop-up magnifier hinge breaks; check it opens and closes cleanly.
About this camera
The entry point to the Mamiya 645 system — a fixed waist-level finder, modest shutter range, and complete compatibility with the full 645 lens family.
Key Specs
Frequently asked questions
- What battery does the Mamiya M645J take?
- The Mamiya M645J uses a 2x LR44 / SR44 battery.
- What lens mount does the Mamiya M645J have?
- The Mamiya M645J uses the Mamiya 645 mount.
- What shutter speeds does the Mamiya M645J offer?
- The Mamiya M645J's shutter speeds range from 8s to 1/500s.
- What light meter does the Mamiya M645J use?
- The Mamiya M645J meters with ttl-cds-center-weighted.