Lens · prime
Mamiya Sekor C 50mm f/4.5
Mamiya · from 1974
Discontinuedmedium-format
Mamiya Sekor C 50mm f/4.5: 11 elements in 8 groups, 77mm filter thread, 915g.
- Focal length
- 50mm
- Max aperture
- f/4.5
- Mount
- Mamiya RB
- Format
- medium-format
- Elements / groups
- 11 / 8
Known for
- Landscapes
- Architecture
- Interiors
- Creative perspectives
Considerations
- Leaf shutter in the lens: cock the camera and lens shutters before mounting
Optical characteristics
Silverlog's editorial rating: our own judgement, not measured data.
Sharpness (wide)4, level 4 of 5
Sharpness (stopped)5, level 5 of 5
Contrast4, level 4 of 5
Flare resistance3, level 3 of 5
CA control3, level 3 of 5
Vignetting control3, level 3 of 5
Distortion control3, level 3 of 5
Bokeh: Wide angle character
Rendering: Ultra-wide perspective
Colour: Mamiya warm
Silverlog's editorial rating, 1 to 5; five is best. Not lab-measured.
Buying guide
Check the leaf shutter fires at all speeds, the aperture and focusing smoothness, and the condition of the glass.
Specifications
| Mount | Mamiya RB |
| Focal Length | 50mm |
| Max Aperture | f/4.5 |
| Min Aperture | f/32 |
| Filter Size | 77mm |
| Weight | 915g |
Optical design
| Formula | Retrofocus |
| Elements | 11 |
| Groups | 8 |
| Coating | Multi-Coated |
Pricing
- Typical used price (US market)
- $400 - $700
- Mint
- ~$850
Indicative, no dated source.