Konica Hexanon AR 57mm f/1.2
The Konica Hexanon AR 57mm f/1.2 is a 57mm f/1.2 manual-focus lens for the Konica AR mount, made by Konica from 1965-1970s. It uses 7 elements / 6 groups, Double Gauss. Typical used value is $500 to $1,600, with most examples near $850, and it adapts to Sony E, Fuji X, MFT, Canon RF, Nikon Z, and L-mount with a plain mechanical adapter.
Konica Hexanon AR 57mm f/1.2 specifications
Konica Hexanon AR 57mm f/1.2 specifications
Why collectors want it
A rare and highly regarded fast normal lens that is a grail item for Konica collectors. It renders with a smooth glowing wide-open look and excellent sharpness stopped down. Scarcity keeps prices high relative to other vintage fast fifties.
Mount and adapters for the Hexanon AR 57mm f/1.2
The Konica Hexanon AR 57mm f/1.2 has a native Konica AR mount. Konica AR is the 1965 bayonet with a 40.5mm register used by Konica Autoreflex SLRs and Hexanon lenses until 1987. Every mirrorless mount has a shorter register than 40.5mm, so a plain mechanical adapter puts the lens at its design distance and infinity focus is preserved. Plain adapter ring. The 40.5mm register is the shortest of the classic 35mm SLR mounts, so AR lenses adapt to mirrorless but cannot reach infinity on any DSLR.
| Camera system | Adapter | Infinity focus | Frames like | Guide |
|---|---|---|---|---|
| Sony E | Plain mechanical, 22.5mm | Yes | 57mm on full frame; 86mm on APS-C (1.5x) | Konica AR to Sony E |
| Fuji X | Plain mechanical, 22.8mm | Yes | 86mm on APS-C (1.5x) | Konica AR to Fuji X |
| MFT | Plain mechanical, 21.25mm | Yes | 114mm on Four Thirds (2x) | Konica AR to MFT |
| Canon RF | Plain mechanical, 20.5mm | Yes | 57mm on full frame; 91mm on APS-C (1.6x) | Konica AR to Canon RF |
| Nikon Z | Plain mechanical, 24.5mm | Yes | 57mm on full frame; 86mm on APS-C (1.5x) | Konica AR to Nikon Z |
| L-mount | Plain mechanical, 20.5mm | Yes | 57mm on full frame; 86mm on APS-C (1.5x) | Konica AR to L-mount |
Frequently asked
What mount is the Konica Hexanon AR 57mm f/1.2?
The Konica Hexanon AR 57mm f/1.2 has a native Konica AR mount. Konica AR is the 1965 bayonet with a 40.5mm register used by Konica Autoreflex SLRs and Hexanon lenses until 1987. 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 Konica Hexanon AR 57mm f/1.2 worth in 2026?
A used Konica Hexanon AR 57mm f/1.2 typically sells for $500 to $1,600, with most clean working examples near $850. Basis: eBay sold listings, 2024-2025; scarce and collector-driven. This is an estimate, not an appraisal; condition, variant, and service history move the number.
Does the Konica Hexanon AR 57mm f/1.2 work on Sony E, Fuji X, and MFT?
Yes. Konica AR has a 40.5mm register and every mirrorless mount is shorter (16mm to 20mm), so a simple Konica AR adapter reaches infinity with no optics. On a full-frame body the Konica Hexanon AR 57mm f/1.2 frames as a 57mm lens; on APS-C (1.5x) it frames like a 86mm, on Canon APS-C (1.6x) like a 91mm, and on Micro Four Thirds (2x) like a 114mm. Plain adapter ring. The 40.5mm register is the shortest of the classic 35mm SLR mounts, so AR lenses adapt to mirrorless but cannot reach infinity on any DSLR.
When was the Konica Hexanon AR 57mm f/1.2 made?
Konica made the Hexanon AR 57mm f/1.2 from 1965-1970s. It launched the same year as the Konica AR mount itself (1965).
What is the optical design of the Konica Hexanon AR 57mm f/1.2?
The Konica Hexanon AR 57mm f/1.2 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 Konica Hexanon AR 57mm f/1.2?
Close alternatives in the same focal class are the Minolta MC Rokkor-PG 58mm f/1.2 (58mm f/1.2, $300 to $850), the Minolta MC Rokkor-PF 58mm f/1.4 (58mm f/1.4, $70 to $260), and the Carl Zeiss Jena Biotar 58mm f/2 (58mm f/2, $120 to $550). The Minolta MC Rokkor-PG 58mm f/1.2, The Minolta MC Rokkor-PF 58mm f/1.4, and The Carl Zeiss Jena Biotar 58mm f/2 cost less on the used market.
Alternatives to the Hexanon AR 57mm f/1.2
Lenses within 15mm of 57mm from other makers, ranked by how close they sit in focal length, aperture, and price.
Side-by-side comparisons
- Konica Hexanon AR 57mm f/1.2 vs Asahi Pentax Super-Takumar 55mm f/1.8
- Konica Hexanon AR 57mm f/1.2 vs Canon FD 55mm f/1.2 S.S.C.
- Konica Hexanon AR 57mm f/1.2 vs Carl Zeiss Jena Biotar 58mm f/2
- Konica Hexanon AR 57mm f/1.2 vs Fujinon 55mm f/1.8 EBC
- Konica Hexanon AR 57mm f/1.2 vs Helios 44-2 58mm f/2
- Konica Hexanon AR 57mm f/1.2 vs Minolta MC Rokkor-PF 55mm f/1.7
- Konica Hexanon AR 57mm f/1.2 vs Minolta MC Rokkor-PF 58mm f/1.4
- Konica Hexanon AR 57mm f/1.2 vs Minolta MC Rokkor-PG 58mm f/1.2
- Konica Hexanon AR 57mm f/1.2 vs Olympus OM-System Zuiko Auto-S 55mm f/1.2
Where this lens fits
Appears in these lists
- Best vintage fast fifty lenses
- Best vintage lenses for Sony E mount
- Best vintage lenses for video and cinema rigs
- Best vintage lenses for glow and character
- Most collectible vintage lenses