The YH16x7 KRS is an extremely lightweight portable 1/2-inch lens offered by Canon to support diverse program origination. It is a key member of a family of five portable 1/2-inch lenses that collectively support a broad range of business & industrial and corporate production applications. This particular lens is intended for producers having as their foremost priority a truly lightweight general-purpose mobile production lens-camera system that offers excellent performance. The YH16x7 KRS utilized advanced technologies and powerful computer-aided design techniques to produce a very wide-angle HDTV lens in an impressively lightweight 2.0 lb package. It is a design directly responding to the expressed creative desires of producers for a versatile acquisition system. ABOUT THIS LENS The YH16x7 KRS represents an excellent compromise between the demands for high mobility in a handheld camera system and the performance requirements for high-end Pro-Video production. This lens provides a 49.1-degree horizontal field of view and a focal range from 7mm to 112mm. The requisite optimization strategies to achieve this balance sought a high MTF over the entire image plane, minimization of chromatic aberrations, and maximization of image contrast. Preservation of the highest MTF at the wider-angle focal lengths (where scene detail can be particularly high) was a special priority. Contrast was extended by superb control of black reproduction - with optical and mechanical design innovations that substantially reduced flare, veiling glare, and any internal reflections.