Sinar 105mm f4 Sinaron Digital (Sinar DB) - Lens

Sinar 105mm f4 lens for digital backs. Image circle 107mm.

"Sinaron Digital Lenses with Auto ApertureMounts (446.85.119–164) were designedfor use with digital single-chip CCD backs. Resolving power and selection offocal lengths are tailored specifically tothe small size of the CCD array. In order to reduce stray light and to maintain thebest possible camera adjustment capabilities, these lenses are mounted inside the camera."