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Canon HD optical quality lenses
Ralf Jurrien : April 16th 2006 - 22:18 CET
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CanonCanon HD optical quality lenses : As leading manufacturers introduce economical, mid-range HD cameras to support the expanding demand for affordable HD content, Canon Broadcast and Communications remains out front with a new line of lenses engineered for these "general" HD applications. Canon, which has established a leading reputation in HD lens technology for broadcasters and content producers who require exacting image quality and superior operational capabilities (HDxs line), has incorporated their philosophy for excellence into their new line of HDgc lenses. The new lenses combine the best optical features of Canon's remarkable lenses, including reduced chromatic aberration and high and well-controlled MTF.
Canon HD optical quality lensesHDgc lens - Digital operational tools
They are also included with digital operational tools that include Shuttle Shot, Framing Preset, Speed Preset, and more in a line-up that delivers HD optical quality, and other higher-end lens advancements. The HDgc lens line includes for 1/2-inch CCD cameras: the KH21ex5.7 IRSE telephoto lens, the KH10ex3.6 IRSE wide-angle lens, and a 16X standard lens, which will be available in late 2006. Digital "eDrive" is available on all three of these lenses and represents a principal difference (along with a built-in 2X extender) between these models, and the more economical KH20x6.4 KRS lens (for 1/2-inch HD CCD cameras) and the KJ20x8.5B KRS lens (for 2/3-inch HD CCD cameras).

Canon lens - HD acquisition systems
This important new tier of HD lenses supports the emergence of an entirely new class of cost-effective HD acquisition systems recently introduced by all of the world's major professional camera manufacturers. The arrival of diverse new tapeless HD camcorders is augmenting the established tape-based HD acquisition systems and lowering the cost of transitioning broadcast news and general programming to high definition. It is anticipated that the HDgc class of lenses will expand as these new HD acquisition systems continue to proliferate globally.

KH20x6.4 KRS lens - Shuttle shot function
All five HDgc lenses feature Canon's innovative technology, which enhances optical performance and provides multiple user benefits. The new HDgc lenses achieve an excellent contrast performance and a well-controlled MTF (Modulation Transfer Function) profile over their entire respective image planes while also minimizing chromatic aberrations. The lenses are designed for compactness and low weight in direct response to the equally compact new tapeless HD camcorders. In addition, these lenses incorporate special elements without lead to minimize the impact on the environment, including "Flourite" with extraordinary dispersion characteristics and the newly developed Hi-UD (high index ultra low dispersion) glass. The KH20x6.4 KRS and the KJ20x8.5B KRS lenses feature Canon's exclusive Shuttle Shot function, an advanced servo system that facilitates zooming back and forth between any two focal length positions and brings an entirely new range of value-added creativity to hand-held acquisition systems. These two lenses also feature a new ergonomic drive unit that achieves an ideal balance in comfort and operation.

Canon HDgc lenses - HD quality and affordability
"High Definition imaging is fast becoming a new standard, not simply in broadcast television, but in a wide range of other professional applications as well, and Canon is staying on top of the demand with their new HDgc lenses," said Gordon Tubbs, assistant director of the Broadcast and Communications division at Canon USA, Inc., a subsidiary of Canon Inc. "Canon's decades of leadership and optical expertise in both standard- and high-definition lens technology, as well as our latest innovations in optics and ergonomics, enables us to engineer this new class of lenses with an eye on HD quality and affordability."

Canon 16X HDgc lens - e-Drive
The KH21ex5.7 IRSE, the KH10ex3.6 IRSE, and the upcoming 16X HDgc lenses all feature eDrive, an important advance pioneered by Canon. Utilizing three Canon ultra-high-precision, microprocessor-driven digital servos with miniature 16-bit optical encoders, Canon's eDrive technology represents an entirely new way to control portable lenses. With eDrive, users can easily program such functions as zoom and focus settings into a lens for precise, automated repeatability via an easy-to-use LCD menu, assignable "soft" function buttons, and the rocker switch built into the lens grip. Users can program multiple settings or none at all, depending on their personal needs and preferences.

Canon eDrive - Shuttle shot
Canon's eDrive provides: nine user-definable function profiles; a choice of manual, digitally assisted, or fully programmed control; and instant "Shuttle Shot" to zoom to the longest focal length for quick check of focus and back focus. Digitally assisted shooting techniques offered by Canon's eDrive include graceful "padded" zoom start/stops so that zooms begin and end softly and without jerkiness. Canon's eDrive provides for memorized focus and zoom positions, repeatable focus with no mechanical play or gear backlash, steady and slow zoom creeps, and one-button on/off.

Canon KH21ex5.7 IRSE & KH10ex3.6 IRSE lens
The KH21ex5.7 IRSE lens features a 21X zoom ratio and a 2X extender, ideal for both ENG and EFP applications. The KH10ex3.6 IRSE lens is Canon's wide-angle version and offers a 3.6mm wide angle, a 10X zoom ratio, and a 2X extender.

Canon KH20x6.4 KRS & KJ20x8.5B KRS lens
The KH20x6.4 KRS lens (for 1/2-inch CCD cameras) features a 20X zoom ratio and a wide angle of 6.4mm for a focal length of 6.4-128mm, while the KJ20x8.5B KRS lens (for 2/3-inch CCD cameras) features the same 20X zoom ratio, a wide angle of 8.5mm, and a focal length of 8.5-170mm.

Canon HDgc lens - Compact size and weight
In addition to their compact size and weight, Canon has engineered additional ergonomic design innovations that further improve the price-performance advantages of the HDgc lenses. All lenses feature a new, smaller drive unit that not only comfortably fits into the palm of the user's hand, but also improves the feeling of unity between the drive unit and the lens. These drive units, featuring a grip support and ribbed surface, are tilted at an ideal angle in order to achieve a better balance and to provide more comfort and help reduce operator fatigue.

Canon HDgc series - High picture quality
The new economical HDgc Series lenses combine high picture quality, ease of use, and sophisticated operation to provide support to the popular trend of more affordable HD cameras for an expanding user base. In addition, Canon is manufacturing all of its lenses, including the new HDgc models, without lead, cadmium, mercury, and other toxins as part of the company's policy to minimize the impact on the environment.

About Canon USA
Canon USA, Inc. delivers consumer, business-to-business, and industrial imaging solutions. The Company is listed as one of Fortune's Most Admired Companies in America and is rated #35 on the BusinessWeek list of "Top 100 Brands." Its parent company Canon Inc. is a top patent holder of technology, ranking second overall in the US in 2005, with global revenues of $31.8 billion. For more information, visit Canon’s web site.

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