Cosina Voigtländer
Cosina Voigtländer refers to photographic products manufactured by Cosina under the Voigtländer name since 1999. Cosina leases rights to the Voigtländer name from RINGFOTO GmbH & Co. ALFO Marketing KG in Germany. Cosina Voigtländer products have included 35mm film SLR and rangefinder camera bodies, and lenses for the M39 lens mount (Leica screw mount), M42 lens mount, Leica M mount, and other lens mounts. Lenses. Cosina started producing cameras and lenses under the Voigtländer brand in 1999, when it introduced a new M39 mount body and lenses. It has since produced a prodigious variety of these lenses in  M39x26, Leica M mount, Nikon S rangefinder mount (some fully usable with Contax RF bodies), and SLR mounts including M42 and Nikon F. Cosina produces hoods and accessory viewfinders for many of the lenses. Note that while the lenses feature familiar Voigtländer names, the optical formulas are all new. Presently, manual focus Voigtländer lenses are available, or will soon be available in four series: the E-mount series for Sony E-mount, the VM series for Leica M-mount, the SL and SL II series for several 35 mm single-lens reflex camera mounts (Canon EF-mount, Nikon F-mount , and Pentax K-mount), and the MFT series for the Micro Four Thirds mount. Legacy lenses for the M39 lens mount, Nikon S-mount and M42 lens mount have been discontinued. Sony E-mount. Since October 2015, numerous Voigtländer lenses have been released for full frame Sony E-mount. Leica M-mount. At present (March 2018), there are 16 lenses for the Leica M-mount, which can all be combined with rangefinder except the 10 mm lens. 35 mm SLR lenses (SL II series). Voigtländer SL II lenses are CPU-enabled manual-focus designs available in Nikon AI-P (AI -S with Program), Pentax K-A and Canon EF mounts. The Nikon term for such a design is AI-P, although these lenses are not designated as such. The CPU of SL lenses enables full compatibility (except for autofocus) with the full range of AF Nikon SLR cameras. The Nikon AI-P versions enable full compatibility (except for autofocus) with all Nikon AF SLRs, similar to the AI-P manual-focus lenses Nikon has produced in the past. All metering patterns in 2-D mode, all program modes, and viewfinder focus indicators are available. Micro Four Thirds. On August 26 , 2010, Cosina joined the Micro Four Thirds Standard Group and have since introduced the following lenses: Discontinued lenses. Several lenses, which were manufactured in the past, have now been discontinued. SL series. Voigtländer SL lenses are manual-focus designs. They were sold in a variety of mounts: Nikon AI-S, Canon FD, Pentax K, M42, Minolta SR, Contax/Yashica MM, and Olympus OM. Some lenses were also available in Canon EF- and Minolta A-mount, although without autofocus. They were produced for a short time, and discontinued when Cosina introduced its Carl Zeiss "Z" series lenses.