Table of Contents
Pentax SMC Takumar 15mm f/3.5
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Summary
The SMC Takumar 15mm f/3.5 is an ultra-wide-angle manual-focus prime introduced in 1975 for the M42 screw mount, making it one of the last Takumar lenses before Pentax transitioned fully to the K-mount system. It was a groundbreaking design at the time—one of the first rectilinear 15 mm lenses for 35mm film—and is optically identical to the early K-series version. A limited number of units (around 900 total, with 400 featuring an aspherical element) were produced, making it one of the rarest and most collectible Takumars ever made. The lens features a 13-element - 12-group design with Super Multi-Coating (SMC) and a 6-blade automatic diaphragm. It stops down to f/22, focuses as close as 30cm, and delivers a 0.06× magnification ratio. It has a built-in hood, a dedicated hard case, and uses internal rear-mounted filters (Skylight, UV, Yellow Y2, Orange O2) due to its massive, bulbous front element. The lens measures 80 × 81.5mm, weighs 570g, and includes open-aperture metering support on compatible Spotmatic bodies like the ES and ESII.
Tech Specs
| Manufacturer | Pentax |
| Series | M42 Series |
| Model | SMC Takumar |
| Focal Length | 15mm |
| Max Aperture | f/3.5 |
| Min Aperture | f/22 |
| Format | Full-Frame |
| Image Circle | ⌀ |
| Minimum Focus | 30cm |
| Focus Rotation | ° |
| Iris Blades | 6 |
| Optical Design | 13/12 |
| Squeeze | none |
| Front Diameter | 80mm |
| Filter Thread | Built-in |
| Focus/Zoom Rod | none |
| Native Mount | M42 |
| Data Protocol | none |
| Length | 81.5mm |
| Weight | 570g |
| Body Telescope | - |
| Body Material | - |
| Focus Drive | - |
| Iris Drive | - |
| Zoom Drive | - |
History
Country of Origin: -
Release Date: 1975
Launch Price: -
Design Revisions: