Compact Tamron SP mirror lens at 350mm for OM mount, super-telephoto reach in a pocket-sized catadioptric design.
The Tamron SP 350mm f/5.6 Mirror is a catadioptric (mirror/reflex) super-telephoto for the Olympus OM mount. SP = Super Performance — Tamron's premium lens line. f/5.6 is fixed (no aperture adjustment). Olympus OM mount.
f/5.6 fixed aperture. 350mm focal length (full-frame super-telephoto). Mirror/catadioptric design. Manual focus. Compact barrel for focal length. Olympus OM mount.
Mirror lenses use an internal mirror system to fold the optical path — producing a compact barrel for a very long focal length. The fixed f/5.6 aperture means exposure via shutter speed and ND filters only. Characteristic doughnut-shaped bokeh from the catadioptric design.
On the used market the Tamron SP 350mm f/5.6 Mirror is a vintage compact super-telephoto. Condition checks: mirror surfaces (internal), focus ring smoothness. Olympus OM mount — manual focus, fixed f/5.6.