|Canon HDgc Lens Series
|High Definition Lens to Support the Expanding HD Camera Market
For 2/3 inch cameras :
KJ10ex4.5B IRSE A
KJ20x8.5B KRSD A
For 1/2 inch cameras :
KH20x6.4 KRSD SY14
KH13x4.5 KRSD SY14
For 1/3 inch cameras :
KT20x5B KRSD A
Concept of the HDgc Series
The emergence of a new generation of cost-effective HDTV acquisition systems spurred Canon to create a new category of portable lenses to better match the price performance ratio of these cameras. This led to the introduction in 2006 of the new HDgc lens series. Specifically targeted for HD ENG, these lenses retained the optomechanical robustness and ergonomics of the high-end HDxs lens series as well as the same digital drive units. Canon mobilized contemporary design tools and optical materials that facilitated a significant cost reduction while still maintaining an impressive overall HD imagining performance. In recognition of the continuing introduction of new improved 2/3-inch HD acquisition systems and supported by a global experience, Canon is now introducing a second generation HDgc that reflects further design optimizations.
Compared to the SDTV Lenses, the HDgc Series Lenses are...
• Specially designed to use optical elements that are effective in further minimizing chromatic aberrations, such as "Hi UD
Glass", "Aspherical Elements" and other special elements. These elements will decrease the flare that causes blurring of the
picture and enables the lens to keep a high MTF.
• Setting a higher standard for parts quality and are designed to improve the lens structure. The HDgc lens manufacturing process
has become tighter with reduced tolerance's to maintain a higher lens performance.
Quality of the HDgc Series
The HDgc Series lenses are based upon Canon's latest design concepts which support the new generation of cost-effective HD
acquisition systems. The HDgc lenses are designed to meet the specific bandwidth frequency (or the number of scanning lines)
of these new HD camera systems and at the same time to offer an excellent performance-cost optimization.
|Test Frequency of Broadcast Camera
||320 TV Lines / 4MHz
||up to 640 TV Lines / 8MHz
||up to 800TV Lines
|Test Frequency of Broadcast Lens
||24Lines / mm
||up to 48Lines / mm
||up to 74Lines / mm
|Actual Canon Resolution of Broadcast Lens
||up to 75Lines / mm
||up to 100Lines / mm