The Zeiss 50mm f/1.4 ZK Planar T* Lens is a high-speed standard lens for the exacting 35mm SLR photographer. Considered by professional photographers to be one of the worlds best SLR lenses (if not the best), this "ZK" lens is now available for Pentax K-mount cameras. This lens will fully support Program mode, Aperture Priority, Shutter Priority, and full Manual modes with any K-type camera introduced after 1998 (e.g. PZ, MZ, ZX, and all digital SLR cameras).
The Planar lens with its front-and-back symmetry was invented by Dr. Paul Rudolf and is one of the best-known Carl Zeiss T* lenses. It is remarkably effective in eliminating aberrations and possesses very high definition allowing contrast in the subject to be faithfully reproduced.
Precise mechanism enables exact manual focusing
Carl Zeiss T* lens coating
Special attention is paid to guarantee absolute color matching