Sigma Art 24-70mm f2.8 OS HSM for Canon EF 35mm This is an extremely rare

This is an extremely rare Leica thread mount variant of the original Voigtlander 50mm f1

That's Four Thirds

The Asahi Angle Finder slips on to the viewfinder of a Pentax Spotmatic (or similar) and provides a clear view of the viewfinder from any 90-degree angle (the mount rotates

This lens is an early 7 element/5 group design

6m mark (you're unlikely to notice it if you're not looking for it)

Sigma Art 24-70mm f2.8 OS HSM for Canon EF 35mm This is an extremely rareThe Sigma Art 24 70mm f2. 8 OS HSM is a fast professional zoom lens for the Canon EF mount. Unlike Canon's 24 70mm f2. 8 lens, this one also has a built in image stabilizer a useful bonus for steadier shooting. In excellent cosmetic condition, with light wear from use and handling. Includes lens hood.