The new HD 50mm d-far* 1.4 lens represents a new standard in the ultimate image quality. Designed for Pentax full frame DSLR cameras, the HD 50mm d-far* 1.4 offers a weather sealed body, HD, SP & Aero bright coating II which provides hi resolution image with edge to edge sharpness. For the new lens, Pentax conducted extensive testing for the top-of-the-line star series, demanding the maximum compensation of various aberrations in order to deliver the highest image quality. Pentax also designed the lens to assure excellent imaging performance with all compatible camera bodies - even when mounted on next-generation digital SLR cameras which will feature image quality and performance even higher than existing models. The new lens delivers the superb imaging power demanded of a new-generation, high-performance star-series lens, assuring exceptional resolving power from the center to the edges of the image field, even when set to open aperture.