Astro-Gesellschaft (Astro Berlin) Tachar 50mm f/2.3 lens. This is a vintage cine lens from the German manufacturer Astro Berlin, featuring the Tachar optical design patented on June 9, 1925. It is a fast normal-focal-length prime with a large external gear ring typically used for focus or iris control in motion picture applications. The lens is marked for a 30 mm diameter screw mount in comparable examples.
Technical Specifications
- Focal Length: 50mm - Maximum Aperture: f/2.3 - Manufacturer: Astro-Gesellschaft (Astro Berlin) - Patent: U.S. Pat. June 9, 1925 - Mount: Screw mount - Type: Cine / motion picture lens
Condition Report
The exterior shows heavy wear consistent with age and professional use. The black paint is extensively chipped and worn, with underlying metal and reddish rust spots visible on the geared outer ring and barrel. There are scuffs, surface dirt and oxidation throughout. The glass elements display reflections and some internal marks or haze; no major fungus is clearly visible in the images. The large gear appears intact. Overall condition is good with light cleaning marks.
What's Included
- Astro-Gesellschaft Tachar 50mm f/2.3 lens - Large geared focusing/iris ring (as mounted)
