Designed exclusively for full-frame VM (Leica M-mount) cameras, this manual-focus lens promises exceptional ... aperture and a 12-blade diaphragm that produces near-circular bokeh, the APO-Ultron ...

There were plenty of new cameras ... lenses, and two aspherical (ASPH) lenses, to reduce flare and ghosting for improved contrast and quality. An Eleven-bladed diaphragm offers more circular ...