
Momentary Iris Switch | Display Switch | Digital Function |
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Retum Switch |
| Selector |
Informational
Display
| VTR switch |
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Memory | [Aux2] switch for | [Aux1] switch for | ||
Switch | enhanced operation | |||
enhanced operation | ||||
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Enhanced Digital Drive Unit |
| Ecological Design | ||
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Rotary Encoder
The KH21ex5.7 is equipped with an enhanced digital drive unit. Conventional potentiometers are analog positional sensors capable of only 8- 10 bit equivalent resolution. Thus virtual ENG studio systems called for an optional Encoder Unit to be put on the zoom and focus ring of the lens. With the introduction of 16 bit resolution Rotary Encoder Devices built into the new enhanced digital drive unit, the lens can simply be integrated into a virtual digital studio system without any additions. The encoders also enable superior precise control. The zoom servo provides a dynamic range of 0.5 sec. to over a 5 min. super slow zoom. Repeatability in focus and iris control are also much more precise. Canon’s unique technology has made the encoder device surprisingly small to be installed in the existing drive unit without changes in size or weight.
HDTV Optical Performance
SPECIFICATIONS
KH21ex5.7 IRSE
New HDgc Logo
Short M.O.D. 0.8m (10mm with Macro)
Dynamic Zoom Speed Range
●Zoom Speed from 0.5sec. to over 5min. (From wide end to tele end)
Zoom Ratio 21x
•Reduced Chromatic Aberrations
•High and Flat MTF
•Countermeasures Against Ghosting and Flares
Lens with Optional | Lens with Encoder Devices |
Encoder Unit | included in the Drive Unit |
Ecological Design
The HDgc series has succeeded in reducing the use of harmful and hazardous substances that could pollute the environment.
Zoom Ratio
Range of Focal Length
Maximum Relative Aperture
Angular Field of View
Minimum object Distance (M.O.D.)
Object Dimensions at M.O.D.
Approx. Size
Approx. Mass
DIMENSIONS 45.3
16:9
1.0X |
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| 2.0X | ||
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| 21X |
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5.7 – 120mm |
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| 11.4 – 240mm | ||
1:1.4 at 5.7 – 86mm |
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| 1:2.8 at 11.4 – 172mm | ||
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1:1.95 | at 120mm |
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| 1:3.9 | at 240mm |
62.9° x 38.0° |
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| 34.0° x 19.5° | ||
3.3° x 1.9° |
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| 1.7° x 0.9° | ||
| 0.8m (10mm with Macro) |
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92.2 x 51.9cm | at 5.7mm |
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| 46.1 x 26.0cm at 11.4mm | |
4.3 x 2.4cm | at 120mm |
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| 2.2 x 1.2cm | at 240mm |
| W x H x L = 169.4 x 111.9 x 217.5 mm |
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| 1.79kg |
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| VTR SWITCH | INFORMATION DISPLAY On/Off SWITCH |
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| F.B. ADJUSTING LOCK SCREW | INFORMATION DISPLAY |
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217.5 |
| 38±0.03 |
| INDEX MARK | DIGITAL FUNCTION SELECTOR |
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MACRO BUTTON
EXTENDER LEVER
(in air)
AUX1 SWITCH
φ98
12 20
6
m ∞
7
4
7.1
120 | 5.6 |
11 8 | |
60 | 16 |
30 | C |
15 |
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10 |
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5.7 |
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°45
52.9
IMAGE PLANE
62.139.5 111.9
| ZOOM OPERATION |
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HOOD | 40.6 | 119.7 | |
CONNECTOR FOR |
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| 169.4 |
REMOTE ZOOM CONTROL (8 PIN) | ZOOM SPEED VOLUME |
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CONNECTOR FOR ZOOM REMOTE
& FOCUS REMOTE UNIT (20 PIN)
ZOOM LEVER
CONNECTOR FOR ZOOM REMOTE & FOCUS REMOTE UNIT (20 PIN)
KH21ex5.7 IRSE (Unit:mm)