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The XJ22x7.3BIE-D features a high-end optical system based upon classic studio lens design principles but carefully constrained to a physical size and weight commensurate with JVC's ProHD cameras. The more severe physical constraints of portable EFP/ENG design did not apply to this lens. Instead, a wide 105mm input optical port and novel new optical design has produced a high sensitivity, high contrast, and optimized uniformity of brightness across the image plane that is truly impressive for such a compact lens. Weighing in at 13.4 lbs (about twice that of a HD portable lens) the lens is still only a quarter the weight of a typical HD studio box lens.
The coordinated optimization of the MTF profile, contrast, and relative light illumination followed high-end studio design guidelines that ensure high picture sharpness over the image plane. 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.
Finally, the important requirement of low geometric distortion at wide-angle settings constituted another central design imperative and an exemplary performance in this area has been achieved by Canon?s advanced three-group internal focusing system (which also minimizes alterations of chromatic aberrations during the focusing action).
The LCV-42T adapter is required to use this lens with JVC's 1/3-inch ProHD cameras. This will result in an increase in magnification of 1.97x of the focal length of the lens. To calculate image size, please refer to the following table: