Canon KH21EX5.7 IRSE 1/2" Portable Telephoto ENG Lens

Canon KH21EX5.7 IRSE 1/2" Portable Telephoto ENG Lens

Canon KH21EX5.7 IRSE 1/2" Portable Telephoto ENG Lens

B&H # CAKH21X5.7IA MFR # KH21EX5.7 IRSE A
Canon KH21EX5.7 IRSE 1/2" Portable Telephoto ENG Lens

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Product Highlights

  • Zoom Ratio 21x
  • 5.7 - 120mm Focal Length
  • Built in 2x Extender
  • Shuttle Shot
  • Framing Preset
  • Speed Preset
  • Countermeasures Against Ghosting/Flares
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  • 1Description

The Canon KH21EX5.7 IRSE 1/2" Portable Telephoto ENG Lens is a telephoto portable HDTV production lens within the 1/2-inch image format sector of the HDgc family. This particular lens is intended for producers and broadcast and cable news photographers that have a high priority towards the ability to shoot over long distances combined with reasonably wide angle capture. The KH21ex5.7 offers focal lengths up to 120mm (or 240mm with extender) and a wide-angle of almost 63 degrees horizontal.

The KH21EX5.7 utilizes new technologies and computer-aided design techniques to produce a very wide-angle HDTV lens. It is a design directly responding to the expressed creative desires of broadcasters and HD producers for more versatility in an HD acquisition system. The KH21EX5.7 represents a compromise between the demands for mobility in a handheld HDTV camera system and the high imaging performance requirements for HDTV production. The KH21EX5.7 has a high MTF (Modulation Transfer Function) over the entire image plane, minimization of chromatic aberrations, and maximization of image contrast. Relative light distribution was optimized for the more open aperture settings and this uniformity of brightness across the image plane combines with the high contrast and excellent picture sharpness to produce crisp and clear HD pictures.

Shuttle Shot
By memorizing any two focal lengths, the digital drive can automatically "shuttle" between the two points, moving in either direction.
Framing Preset
An angle of view can be preset in either of two memories and the lens will zoom to that position by pushing a simple button. During a performance, framing preset will reproduce the zoom position decided upon at the rehearsal. It is easy to repeat the same zoom as often as you like at the highest speed or in a preset zoom speed.
Speed Preset
A specific zoom speed can be preset in memory and it is possible to repeat the zoom speed as often as you like by pushing a simple button.
16 bit Resolution Rotary Encoder Device
With the introduction of a 16 bit resolution Rotary Encoder Device built into the new enhanced digital drive unit, the lens can simply be integrated into a virtual digital studio system without any additions.
In the Box
Canon KH21EX5.7 IRSE 1/2" Portable Telephoto ENG Lens
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Lens
    Object Image Format 1/2"
    Zoom Ratio 21x
    Aspect Ratio 16:9
    Built-in Extender 2.0x
    Focal Length Range With 1.0x extender:
    5.7 - 120 mm
    With 2.0x extender:
    11.4 - 240 mm
    Macro Yes
    Filter Size 105 mm
    Minimum Object Distance (M.O.D.) 31.5" (0.4" with Macro)
    General Attributes
    Dimensions (WxHxD) 6.7 x 4.4 x 8.6" (169.4 x 111.9 x 217.5 mm)
    Weight 3.9 lb (1.79 kg)
    Packaging Info
    Package Weight 9.2 lb
    Box Dimensions (LxWxH) 19.6 x 12.5 x 10.4"

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