Lens · prime
Mamiya Sekor Z 50mm f/4.5 W
Mamiya
Discontinuedmedium-format
Mamiya Sekor Z 50mm f/4.5 W: 11 elements in 9 groups, 0.28m minimum focus, 77mm filter thread, 760g.
- Focal length
- 50mm
- Max aperture
- f/4.5
- Mount
- Mamiya RZ
- Format
- medium-format
- Elements / groups
- 11 / 9
Known for
- Architecture
- Landscapes
- Interiors
- Creative
Considerations
- Electronic Seiko #1 leaf shutter: needs camera battery power
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 control4, level 4 of 5
Vignetting control3, level 3 of 5
Distortion control3, level 3 of 5
Bokeh: Ultra-wide character
Rendering: Dramatic perspectives
Colour: Neutral
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 RZ |
| Focal Length | 50mm |
| Max Aperture | f/4.5 |
| Min Aperture | f/32 |
| Min Focus | 0.28m |
| Filter Size | 77mm |
| Weight | 760g |
Optical design
| Formula | Retrofocus |
| Elements | 11 |
| Groups | 9 |
| Coating | Multi-Coated |
| Special | Aspherical |
Pricing
- Typical used price (US market)
- $450 - $750
- Mint
- ~$900
Indicative, no dated source.