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SMC Takumar 15mm f/3.5
Asahi Optical · 1971-1975
The ultimate M42 ultra-wide. This engineering masterpiece delivers a 111° field of view with surprisingly well-controlled distortion. 13 elements in a complex retrofocus design. Rare and highly sought after.
Known for
- Architecture
- Landscape
- Interiors
- Astrophotography
Considerations
- Rear filter slot only
- Heavy for field use
- Very rare
Optical Characteristics
Sharpness (wide)4/5
Sharpness (stopped)5/5
Contrast4/5
Flare Resistance4/5
CA Control3/5
Vignetting Control3/5
Distortion Control3/5
Bokeh: N/A for ultra-wide
Rendering: Ultra-wide perspective with low distortion
Color: Neutral SMC rendering
Common Issues
- Filter slot damage
- Focus ring wear
- Coating damage
Buying Guide
Rare and expensive. Check all 13 elements carefully. The rear filter slot should function. A landmark of optical engineering.
Specifications
MountM42 Screw
Focal Length15mm
Max Aperturef/3.5
Min Aperturef/22
Aperture Blades6
Min Focus0.3m
Weight530g
Optical Design
FormulaRetrofocus
Elements13
Groups12
CoatingSMC (Pentax)
Pricing
£600 - £1200
Typical used price
Mint: ~£1800
Rare collectible - prices reflect scarcity
Adapts To
Sony EFujifilm XCanon RFNikon ZMicro Four Thirds
Compatible Cameras
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Last verified: Jan 2026Report an error