Picture coverage of 46° produces pictures with natural perspective. Relatively fast f/2 maximum aperture provides bright and easy-to-focus images in the viewfinder. A light lens at 220 grams. Stops down to f/16 for additional depth-of-field. Takes 52mm filters. High resolution Nikkor (all metal and glass construction very much in demand for precision work). The extra-long “throw” (helicoid travel) lends itself to pinpoint accuracy in terms of focus at full aperture. Major stop-motion cinematographic firms (including one Oscar winner) nominate these lenses for the finest control over focus.