Lens · prime
SMC Takumar 15mm f/3.5
Asahi Optical · 1974
Rare35mm
The widest M42 lens listed by M42Lens: a 13-element, 12-group retrofocus design with built-in filters and no front thread.
- Focal length
- 15mm
- Max aperture
- f/3.5
- Mount
- M42 Screw
- Format
- 35mm
- Elements / groups
- 13 / 12
Known for
- Architecture
- Landscape
- Interiors
- Astrophotography
Considerations
- Built-in filters only; no front filter thread
- Heavy
- Very rare
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 resistance4, level 4 of 5
CA control3, level 3 of 5
Vignetting control3, level 3 of 5
Distortion control3, level 3 of 5
Bokeh: N/A for ultra-wide
Rendering: Ultra-wide perspective with low distortion
Colour: Neutral SMC rendering
Silverlog's editorial rating, 1 to 5; five is best. Not lab-measured.
Common issues
- Built-in filter mechanism wear
- Focus ring wear
- Coating damage
Buying guide
Check all elements carefully. The built-in filters should turn and click into place. Rare, so verify authenticity and condition.
Specifications
| Mount | M42 Screw |
| Focal Length | 15mm |
| Max Aperture | f/3.5 |
| Min Aperture | f/22 |
| Aperture Blades | 6 |
| Min Focus | 0.3m |
| Weight | 559g |
Optical design
| Formula | Retrofocus |
| Elements | 13 |
| Groups | 12 |
| Coating | SMC (Pentax) |
Pricing
- Typical used price
- £600 - £1200
- Mint
- ~£1800
Indicative, no dated source.