prime35mmvintage
Mamiya/Sekor Auto 55mm f/1.8
Mamiya · 1965-1975
Mamiya's standard lens for M42 cameras. Warm colour rendition and excellent sharpness make it a sleeper hit. Less common than Takumar but equally capable.
Known for
- Portraits
- General photography
- Warm rendering
- Budget quality
Considerations
- Single coating
- Less common than alternatives
Optical Characteristics
Sharpness (wide)4/5
Sharpness (stopped)5/5
Contrast4/5
Flare Resistance3/5
CA Control4/5
Vignetting Control3/5
Distortion Control4/5
Bokeh: Warm, pleasant rendering
Rendering: Sharp with warm character
Color: Warm, inviting tones
Common Issues
- Sticky aperture
- Focus ring wear
- Hard to find
Buying Guide
Check aperture and focus operation. The warm rendering is characteristic, not a flaw. Good value when found.
Specifications
MountM42 Screw
Focal Length55mm
Max Aperturef/1.8
Min Aperturef/16
Aperture Blades6
Min Focus0.45m
Filter Size49mm
Weight200g
Optical Design
FormulaDouble Gauss
Elements6
Groups4
CoatingSingle Coated
Pricing
£30 - £70
Typical used price
Mint: ~£100
Good value alternative to Takumar
Adapts To
Sony EFujifilm XCanon RFNikon ZMicro Four Thirds
Compatible Cameras
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Last verified: Jan 2026Report an error