primemedium-formatdiscontinued
Mamiya Sekor C 50mm f/4.5
Mamiya · 1977-1999
The Mamiya Sekor C 50mm f/4.5 is the ultra-wide option for the RB67 system, roughly equivalent to 25mm on 35mm format. Complex design allows dramatic wide angle perspective while maintaining good edge performance.
Known for
- Landscapes
- Architecture
- Interiors
- Creative perspectives
Considerations
- Visible distortion
- Vignetting wide open
- Hood essential
Optical Characteristics
Sharpness (wide)4/5
Sharpness (stopped)5/5
Contrast4/5
Flare Resistance3/5
CA Control3/5
Vignetting Control3/5
Distortion Control3/5
Bokeh: Wide angle character
Rendering: Ultra-wide perspective
Color: Mamiya warm
Common Issues
- Large front element vulnerable
Buying Guide
Check for front element damage. Hood is essential.
Specifications
MountMamiya RB
Focal Length50mm
Max Aperturef/4.5
Min Aperturef/32
Aperture Blades6
Min Focus0.4m
Filter Size77mm
Weight1050g
Optical Design
FormulaRetrofocus
Elements10
Groups7
CoatingMulti-Coated
Pricing
£400 - £700
Typical used price
Mint: ~£850
Ultra-wide for RB67
Last verified: Jan 2025Report an error