Olympus OM-System Zuiko Auto-S 50mm f/1.4
The Olympus OM-System Zuiko Auto-S 50mm f/1.4 is a 50mm f/1.4 manual-focus lens for the Olympus OM mount, made by Olympus from 1972-1980s. It uses 7 elements / 6 groups, Double Gauss. Typical used value is $70 to $280, with most examples near $130, and it adapts to Sony E, Fuji X, MFT, Canon RF, Nikon Z, and L-mount with a plain mechanical adapter.
Olympus OM-System Zuiko Auto-S 50mm f/1.4 specifications
Olympus OM-System Zuiko Auto-S 50mm f/1.4 specifications
Why collectors want it
A compact and sharp fast fifty, with later high-serial multi-coated samples valued for better performance wide open. Bokeh is smooth and color is neutral to warm. Serial numbers above roughly 1.1 million are the versions collectors prefer.
Mount and adapters for the OM-System Zuiko Auto-S 50mm f/1.4
The Olympus OM-System Zuiko Auto-S 50mm f/1.4 has a native Olympus OM mount. Olympus OM is the compact 1972 bayonet with a 46.0mm register designed by Yoshihisa Maitani for the OM-1 system. Every mirrorless mount has a shorter register than 46mm, so a plain mechanical adapter puts the lens at its design distance and infinity focus is preserved. Plain adapter ring. Turning the front aperture ring stops the lens down directly on an adapter.
| Camera system | Adapter | Infinity focus | Frames like | Guide |
|---|---|---|---|---|
| Sony E | Plain mechanical, 28mm | Yes | 50mm on full frame; 75mm on APS-C (1.5x) | Olympus OM to Sony E |
| Fuji X | Plain mechanical, 28.3mm | Yes | 75mm on APS-C (1.5x) | Olympus OM to Fuji X |
| MFT | Plain mechanical, 26.75mm | Yes | 100mm on Four Thirds (2x) | Olympus OM to MFT |
| Canon RF | Plain mechanical, 26mm | Yes | 50mm on full frame; 80mm on APS-C (1.6x) | Olympus OM to Canon RF |
| Nikon Z | Plain mechanical, 30mm | Yes | 50mm on full frame; 75mm on APS-C (1.5x) | Olympus OM to Nikon Z |
| L-mount | Plain mechanical, 26mm | Yes | 50mm on full frame; 75mm on APS-C (1.5x) | Olympus OM to L-mount |
Frequently asked
What mount is the Olympus OM-System Zuiko Auto-S 50mm f/1.4?
The Olympus OM-System Zuiko Auto-S 50mm f/1.4 has a native Olympus OM mount. Olympus OM is the compact 1972 bayonet with a 46.0mm register designed by Yoshihisa Maitani for the OM-1 system. With a plain mechanical adapter it fits Sony E, Fuji X, MFT, Canon RF, Nikon Z, and L-mount bodies and keeps infinity focus.
How much is the Olympus OM-System Zuiko Auto-S 50mm f/1.4 worth in 2026?
A used Olympus OM-System Zuiko Auto-S 50mm f/1.4 typically sells for $70 to $280, with most clean working examples near $130. Basis: eBay sold listings and KEH, 2024-2025; high-serial multi-coated versions cost more. This is an estimate, not an appraisal; condition, variant, and service history move the number.
Does the Olympus OM-System Zuiko Auto-S 50mm f/1.4 work on Sony E, Fuji X, and MFT?
Yes. Olympus OM has a 46mm register and every mirrorless mount is shorter (16mm to 20mm), so a simple Olympus OM adapter reaches infinity with no optics. On a full-frame body the Olympus OM-System Zuiko Auto-S 50mm f/1.4 frames as a 50mm lens; on APS-C (1.5x) it frames like a 75mm, on Canon APS-C (1.6x) like a 80mm, and on Micro Four Thirds (2x) like a 100mm. Plain adapter ring. Turning the front aperture ring stops the lens down directly on an adapter.
When was the Olympus OM-System Zuiko Auto-S 50mm f/1.4 made?
Olympus made the OM-System Zuiko Auto-S 50mm f/1.4 from 1972-1980s. It launched the same year as the Olympus OM mount itself (1972).
What is the optical design of the Olympus OM-System Zuiko Auto-S 50mm f/1.4?
The Olympus OM-System Zuiko Auto-S 50mm f/1.4 uses 7 elements / 6 groups, Double Gauss. Double Gauss designs are near-symmetrical six- or seven-element formulas that support fast apertures with good correction; fast versions show glow from spherical aberration and swirl from mechanical vignetting wide open.
Which lenses are similar to the Olympus OM-System Zuiko Auto-S 50mm f/1.4?
Close alternatives in the same focal class are the Asahi Pentax Super-Multi-Coated Takumar 50mm f/1.4 (50mm f/1.4, $70 to $240), the Asahi Pentax Super-Takumar 50mm f/1.4 (50mm f/1.4, $80 to $400), and the Nikon Nikkor-S Auto 50mm f/1.4 (pre-AI) (50mm f/1.4, $60 to $220). The Nikon Nikkor-S Auto 50mm f/1.4 (pre-AI) costs less on the used market.
Alternatives to the OM-System Zuiko Auto-S 50mm f/1.4
Lenses within 15mm of 50mm from other makers, ranked by how close they sit in focal length, aperture, and price.
Side-by-side comparisons
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Asahi Pentax Super-Multi-Coated Takumar 50mm f/1.4
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Asahi Pentax Super-Takumar 50mm f/1.4
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Canon FD 50mm f/1.4 S.S.C.
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Carl Zeiss Jena Pancolar 50mm f/1.8
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Carl Zeiss Planar T* 50mm f/1.4 (C/Y)
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Minolta MD Rokkor 50mm f/1.4
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Nikon Nikkor 50mm f/1.2 AI-S
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Nikon Nikkor-S Auto 50mm f/1.4 (pre-AI)
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Pentax SMC Pentax 50mm f/1.2
- Olympus OM-System Zuiko Auto-S 50mm f/1.4 vs Pentax SMC Pentax-M 50mm f/1.4