Olympus's fast ultra-wide for OM — 21mm f/2 Zuiko, one of the fastest ultra-wides of its era.
The Olympus OM 21mm f/2 is an ultra-wide fast prime for the Olympus OM mount 35mm SLR system — one of the fastest 21mm lenses ever made for any 35mm SLR system. Manual focus. Olympus OM mount.
f/2 maximum aperture. 21mm focal length (full-frame). Manual focus. At approximately 410g. 55mm filter thread. Olympus OM mount.
f/2 at 21mm on full-frame is an extraordinary combination — very few 21mm f/2 lenses have ever existed for SLR or mirrorless systems. The OM 21mm f/2 is rare and highly prized for adapted mirrorless use on Sony FE and other full-frame systems. Olympus OM lenses are easily adapted to modern mirrorless cameras.
On the used market the Olympus OM 21mm f/2 is a rare and valuable vintage ultra-wide prime. Condition checks: 55mm front element for marks, aperture blade condition (oil-on-blades common), focus ring damping. Olympus OM mount — requires OM-to-mirrorless adapter for modern camera use. Rare — verify authenticity.