Canon KH21EX5.7 manual Rotary Encoder, Ecological Design

Momentary Iris Switch	Display Switch	Digital Function
Retum Switch		Selector

Informational

Display

	VTR switch
Memory	[Aux2] switch for	[Aux1] switch for
Switch	enhanced operation
		enhanced operation
Enhanced Digital Drive Unit		Ecological Design

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

Built-in 2x Extender

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.

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 45.3

16:9

1.0X			2.0X
		21X
5.7 – 120mm			11.4 – 240mm
1:1.4 at 5.7 – 86mm			1:2.8 at 11.4 – 172mm
1:1.95	at 120mm		1:3.9	at 240mm
62.9° x 38.0°			34.0° x 19.5°
3.3° x 1.9°			1.7° x 0.9°
	0.8m (10mm with Macro)
92.2 x 51.9cm	at 5.7mm		46.1 x 26.0cm at 11.4mm
4.3 x 2.4cm	at 120mm		2.2 x 1.2cm	at 240mm
	W x H x L = 169.4 x 111.9 x 217.5 mm
		1.79kg
			VTR SWITCH	INFORMATION DISPLAY On/Off SWITCH
			F.B. ADJUSTING LOCK SCREW	INFORMATION DISPLAY
217.5		38±0.03	INDEX MARK	DIGITAL FUNCTION SELECTOR

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
10
5.7

°45

52.9

IMAGE PLANE

62.139.5 111.9

	ZOOM OPERATION
HOOD	CHANGE-OVER KNOB	40.6	119.7
CONNECTOR FOR			169.4
REMOTE ZOOM CONTROL (8 PIN)	ZOOM SPEED VOLUME

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)