Field angle adjustment – ETC Source Four Fresnel User Manual
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Source Four Fresnel User Manual
Field Angle Adjustment
You can adjust the field angle of the fixture from 20 to 65° with the field angle adjustment knob.
Step 1:
Lift the locking lever to unlock the field angle adjustment knob.
Figure-4 Field angle adjustment knob and locking lever.
Step 2:
Do one of the following.
•
To reduce the field angle, turn the focus dial counterclockwise.
•
To enlarge the field angle, turn the focus dial clockwise.
Figure-5 Field Adjustment from flood to spot.
Step 3:
To lock the focus dial, press the locking lever into place.
C A U T I O N :
The focus knob does not rotate 360°. Do not attempt to exceed limit.
Locking lever
Field angle
adjustment knob
Focus knob in
flood position
Focus knob in
spot position
65° field angle
20° field angle