Canon HJ21ex7.5BIASE- USED

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$4,000.00 $3,495.00

Canon HJ21ex7.5B-IASE

  • Recently Serviced
  • Excellent Condition

 

1 in stock

Description

The Canon HJ21ex7.5B-IASE is a 21x wide angle 2/3″ lens built to offer high performance in HDTV news gathering. The lens weighs only 6 lbs and can be relied upon under harsh conditions. Additionally, the lens is also equipped with features such as internal focus and shuttle-shot programmable positioning. The focal-length range is 7.5 to 158mm with a minimum object distance of 0.85 meters (2.8 feet.) The lens also has a 2x extender for increased telephoto capability.

The HJ21ex7.5B has an established track record as the long lens of preference in a wide variety of reality television productions.

Combining a 21x zoom range with generous wide-angle of 65.2 degree horizontal (for the 16:9 aspect ratio) this lens has proven to be a superb workhorse that can address a wide range of field production projects. It is noted for its unusually low focus breathing. Its 3-group focusing system minimizes chromatic aberrations at wide-angle operation.

The design optimization strategies sought a high and balanced MTF profile over the entire image plane at an approximate 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 HD 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.

Four significant technologies converge to produce the HJ21ex7.5B IASE A portable HD production lens system that has been tailored to partner with today’s highest performing HDTV portable cameras and camcorders:

  • Optical TechnologiesNewly developed optical materials combined with the very latest lens element design innovations and multilayer coatings – that produce an unsurpassed pristine imaging system for the most discerning production team. The e-HDxs logo identifies the deployment 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 TechnologiesNew third-generation enhanced digital servo systems using Canon-developed 16-bit optical rotary encoder devices introduce entirely new value-added creativity to handheld acquisition systems
    • Enhanced Digital Drive technology – encompasses a microcomputer driven servo control that embodies position memory and user-defined digital functionality to significantly empower the camera operator charged with creative shaping of the image presented to the camera sensors
    • 16-bit rotary encoder for aperture control reports to the associated camera Iris control system (10-bit compatibility)
    • Maximum Zoom speed is 0.5 seconds and Focus is 1.5 seconds
  • Mechanical TechnologiesErgonomic mechanical design that produced this HD lens having the same size and weight as its SDTV predecessor
    • Compact digital servo drive unit is mounted to the lens at a 12.5 degree angle for comfort and balance
    • Magnesium alloy body for light weight and exceptional durability
  • Ecological DesignAll 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.