Canon XJ75x9.3B IE-D / LO DIGISUPER 75 xs 2/3" Field Lens with Lens Only

The DIGI SUPER 75 xs is one of a family of six long zoom HDTV field lenses presently offered by Canon.

The XJ75x9.3BIE-D is a popular long field lens in the emerging fleets of HDTV mobile television facilities. Canon recognized the broad diversity in imaging needs of mobile trucks that cover all forms of sports and entertainment events and has built up a flexible family of long zoom lenses to flexibly address this wide range of production projects. In doing so, they harnessed the best in optical, mechanical, and digital technologies to implement a long zoom lens that remains modest in its size and weight.

This lens is intended for mobile truck operators, broadcasters, and major venue operators having as their foremost priority the long telephoto flexibility for high definition sports and entertainment event coverage - but at a lower budget level. It can equally service the special needs of government (homeland security) and many institutional sectors of the market that might also have long telephoto as a priority.

ABOUT THIS LENS

The XJ75x9.3BIE-D design applied the most state of the art in Canon optical technologies to achieve a very long focal length range. Canon's renowned engineering design optimization strategies were once again brilliantly applied to the unique technological challenges of providing full HDTV image quality while implementing control of focal length over the challenging range from 9.3mm to 700 mm (up to 1400mm with extender). The design paid particular attention to streamlining the ergonomics and physics of such a daunting optical system. The built-in optical image stabilization system (that makes such an unprecedented focal range practical) has been retained even in this lower cost telephoto lens.

The optimizations within the optical design successfully maintain a high MTF profile over the entire image plane when exercising the wide 75:1 focal length change. A parallel optimization paid close attention to minimizing chromatic aberrations over this same focal range. Recognizing the especially challenging nature of sports and event coverage (that regularly encounter challenging low scene lighting) the lens designers also gave a special priority to achievement of an impressive maximum relative aperture of f 1.7.

Contrast was extended by superb control of black reproduction - with optical and mechanical design innovations that substantially reduced flare, veiling glare, and 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. The resulting superb contrast range of the lens augments its high picture sharpness. The combination ensures stunning picture clarity for sports, large events, and high-resolution surveillance imagery.

• Five significant technologies form the underpinnings of the DIGI SUPER 75xs lens system that has been carefully designed to partner with today's highest performing HDTV cameras:
  
• Optical Technologies
  

  Newly developed materials (including the 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 discerning production team. 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 control chromatic aberrations
  • Crossover Technology - switchable operation between 16:9 and 4:3 aspect ratio imagery
  • 4-position Turret - a switchable system controlled from the associated camera that can switch in the optical extender system or the aspect ratio converter (an additional position allows for future new possibilities)
• Image Stabilization Technology
  

  A built-in Optical Shift Image Stabilizer (identified by Shift-IS) system that effectively removes image stabilities especially at the telephoto extremes of the lens. This is a second generation system that embodies new refinements including separate horizontal and vertical control with high/low sensitivity settings

• Digital Technologies
  

  Second-generation precision digital servo systems using Canon-developed 16-bit optical rotary encoder devices

  • Ensures high precision and repeatability of the Zoom and Focus settings
  • Encoders report to the 32-bit CPU - which, in turn, calculates during the focusing actuation to tightly control a synchronized zoom counter action that eliminates focus "breathing" (undesired change of angle of view that can accompany focus changes). This Constant Angle Focusing System is identified by the CAFS logo
  • 16-bit optical rotary encoder for aperture control reports to the associated camera Iris control system (10-bit compatibility)
  • 16-bit encoders are available for digital interface to Robotic and Virtual studio systems
  • Facilitates a wide range of customized control characteristics and automatic recall of precision control settings when used in conjunction with Canon digital controllers for Zoom and Focus
• Mechanical Technologies
  

  ergonomic mechanical design that exploited Power Optic technologies to maintain the same size and weight as the predecessor SDTV studio lens:

  • Effective elimination of center of gravity variations with focus movement (using Canon's advanced 3 group Internal Focusing system further empowers the creativity of the camera operator)
  • Careful sealing of the optics offers protection against dust, smoke, and other air-contaminants
  • Innovative electrical sealing techniques offers protection against radio interference
• 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 system.