Today I used a Voigtlander 15mm but as I used a Sony NEX-7 this was equivalent to using a 21mm lens.
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 35mm 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.
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