The model XJ22x7.3B IE-D is designed specifically and only for portable cameras. This brings very high optical performance to HDTV or SDTV in an extremely compact box-style design, exceeding the image quality of any portable HD lens or SDTV box-style studio lens. The HDxs system uses Canon’s X-Element and Power Optical System to achieve the highest possible specifications in an extremely compact and lightweight package.
The XJ22x7.3BIE-D utilized new computer-aided optical and mechanical design techniques to produce a compact bona fide studio lens that directly couples to a portable production camera without the necessity of the traditional support "sled" apparatus.
The XJ22x7.3BIE-D is a high-end optical system squarely based upon classic studio lens design principles but carefully constrained to a physical size and weight commensurate with that of contemporary portable production cameras (that typically weigh in at about 15lbs). 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).
- Optical Technologies - Newly developed materials (including Canon's high index ultra low dispersion material) combined with the very latest in element design innovations and multilayer coatings produce an unsurpassed pristine imaging system for the most di
- The HDxs logo identifies the deployment of all of these technologies in the lens
- Power Optics - speaks to the combination of specialized materials, contemporary optical design, and multilayer coatings that produce the superb imagery
- Internal Focus - a Canon design innovation that uses a floating optical system to better control chromatic aberrations
- Crossover Technology - switchable operation between 16:9 and 4:3 aspect ratio imagery
- Digital Technologies - Second-generation precision digital servo systems using Canon-developed miniature 16-bit optical rotary encoder devices
- Mechanical Technologies - a breakthrough ergonomic mechanical design that exploited Power Optic technologies to achieve an overall physical package that looks superb when mounted on any of the contemporary SDTV and HDTV portable production camera heads
- Ecological Design - All contemporary Canon lenses avoid the use of materials and substances potentially harmful to the environment. Lead has been removed from all optics and other identified substances from all components comprising the composite lens syst