Designed exclusively for use with Pentax digital SLR’s, this lens places fish-eye (180°diagonal angle of view at a focal length of 10mm) to super wide-angle performance in a single unit. Capture images with an expanded perspective including creative deformation of subjects and sharp pan focus that extends throughout the entire frame. It features the PENTAX-original SP (Super Protect) coating which repels dust, water and grease to keep the lens clean and image quality at its peak. The PENTAX-original Quick-Shift Focus System allows instant switching from autofocus to manual focus operation.