The J22ex7.6B is a long focal length portable SDTV production lens offered by Canon. It a strategic member of the family of five portable ENG/EFP lenses designed to support high-performance analog NTSC and digital SDTV production – that collectively offers an unusually broad range of creative options. This particular lens is intended for producers and broadcasters having as their foremost priority a long focal length capability combined with wide angle shooting in a lightweight (approx. 4.0 lbs) mobile production lens system having exceptional SDTV performance. The optional flexibility of Canon’s Crossover aspect ratio switching system makes it a superb performer for both 16:9 widescreen and standard 4:3 image formats. ABOUT THIS LENS The J22ex7.6B mobilized the best in portable EFP optical design criteria to achieve a remarkable lens offering focal lengths up to 168mm (or 336mm with extender) and a wide field of view of 64.6 degrees horizontal for the 16:9 aspect ratio. Combined with an exceptionally high sensitivity (F1.8 maximum aperture) this is a lens that can encompass an unusually broad range of shooting situations in broadcast news and general field production. The design optimization strategies sought a balanced MTF profile over the entire image plane at an F4.0 aperture setting. Relative light distribution was optimized for F2.8 and above and this uniformity of brightness across the image plane combines with the high contrast and excellent picture sharpness to produce vividly clear pictures. 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. Similar attention to minimization of ghost images and other highlight-related chromatic distortions caused by strong light sources on-axis and off-axis further extend the operational contrast range of the lens.