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Canon KH13X4.5BKRS 1/2" HD Professional Lens |
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HD 4.5-59mm Professional lens, servo zoom, manual focus, shuttle shot, macro.
The world’s major professional video manufacturers have introduced a diverse range of low-cost tapeless HD camcorders and tape-based HDV professional camcorders. Various design strategies have been adopted by the manufacturers to decisively drive down the costs of these HD acquisition systems. They include different image format sizes, subsampled imagers, and contemporary digital recording techniques. In support of these products Canon designed an entire family of cost-effective HD ENG/EFP lenses that seek to match both the performance and the costs of these diverse and still-emerging HD acquisition systems. To distinguish this level of lens within the overall Canon HD optical hierarchy they are identified by the logo HDgc – to clearly differentiate them from the already established high performance HDxs line of 2/3-inch portable lenses.
These acquisition systems have been developed in response to the broadcast industry’s rapidly growing interest in transitioning to HDTV Newsgathering, HD reality shows, and other lower-budget HD productions. They also directly address the increasing adoption of HD digital origination by the growing independent filmmaking market sector. In addition, they are anticipated to foster growing interest in HD within the broad B2B market sectors. To support this extensive flexibility in HD acquisition systems, the new HDgc family includes 2/3-inch, 1/2-inch, and 1/3-inch lenses.
The KH13x4.5 KRS is a portable HDTV production lens within the 1/2-inch image format sector of the HDgc family. This particular lens is intended for users whose foremost priority is a lens that delivers a generous range of focal lengths combined with an exceptional wide field of view in a lightweight mobile package. It was specifically designed for the new cost-effective 1/2-inch acquisition systems. It is an important member of the emerging HDgc family in terms of facilitating HD imaging with equivalent operational capabilities as the established 2/3-inch SDTV systems. |
KH13X4.5BKRS
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Details
Specifications
| IMAGE COMPOSITION KH13x4.5 KRS |
| Object Image Format |
1/2 Inch 16:9 Aspect Ratio |
Object Image Size (Presented
to Camera Imagers) |
6.97 mm (H) x 3.92 mm (V) |
| Zoom Ratio |
13x |
Focal Length Range
with Extender |
4.5------------59mm |
| Angular Field of View : |
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| At 4.5mm |
75.7° (H) x 46.9° (V) |
| At 59mm |
6.8° (H) x 3.8° (V) |
| SCENE COMPOSITION KH13x4.5 KRS |
Minimum Object Distance (MOD)
(From Front of Lens) |
0.4 Meter (10mm with Macro) |
Scene Object
Dimensions at MOD |
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| at 4.5mm |
73.4 cm x 41.3 cm |
| at 59mm |
5.4 cm x 3.0 cm |
| OPTICAL BRIGHTNESS KH13x4.5 KRS |
| Maximum Relative Aperture |
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| (F-Number) |
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| at 4.5mm------44mm |
1:1.5 |
| at 59mm (Ramping Characteristic) |
1:2.0 |
| PHYSICAL ATTRIBUTES KH13x4.5 KRS |
| Size |
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| Width |
165.4mm |
6.5in |
| Height |
105.1mm |
4.1in |
| Length |
215.3mm |
8.5in |
| Weight |
3.5lbs 1.59kg |
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