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Momentary Iris Switch
Retum Switch
Memory
Switch
Enhanced Digital Drive Unit
HDTV Optical Performance
SPECIFICATIONS
KH21ex5.7 IRSE
Built-in extender
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
HOOD
Display Switch
Informational
Display
VTR switch
[Aux2] switch for
enhanced operation
Ecological Design
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
1.0X
5.7 – 120mm
1:1.4
at 5.7 – 86mm
1:1.95
at 120mm
62.9° x 38.0°
3.3° x 1.9°
92.2 x 51.9cm
at 5.7mm
4.3 x 2.4cm
at 120mm
45.3
217.5
CONNECTOR FOR
REMOTE ZOOM CONTROL (8 PIN)
CONNECTOR FOR ZOOM REMOTE
& FOCUS REMOTE UNIT (20 PIN)
CONNECTOR FOR ZOOM REMOTE
& FOCUS REMOTE UNIT (20 PIN)
Rotary Encoder
Digital Function
The KH21ex5.7 is equipped with an enhanced
Selector
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
[Aux1] switch for
superior precise control. The zoom servo
enhanced operation
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.
New HDgc Logo
Lens with Optional
Encoder Unit
Built-in 2x Extender
Ecological Design
The HDgc series has succeeded in reducing the
use of harmful and hazardous substances that
could pollute the environment.
16:9
21X
0.8m (10mm with Macro)
W x H x L = 169.4 x 111.9 x 217.5 mm
1.79kg
F.B. ADJUSTING LOCK SCREW
38±0.03
(in air)
MACRO BUTTON
EXTENDER LEVER
IMAGE PLANE
ZOOM OPERATION
CHANGE-OVER KNOB
ZOOM SPEED VOLUME
ZOOM LEVER
Lens with Encoder Devices
included in the Drive Unit
2.0X
11.4 – 240mm
1:2.8 at 11.4 – 172mm
1:3.9
at 240mm
34.0° x 19.5°
1.7° x 0.9°
46.1 x 26.0cm at 11.4mm
2.2 x 1.2cm
at 240mm
VTR SWITCH
INFORMATION DISPLAY On/Off SWITCH
INFORMATION DISPLAY
DIGITAL FUNCTION SELECTOR
INDEX MARK
AUX1 SWITCH
40.6
119.7
169.4
KH21ex5.7 IRSE (Unit:mm)
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