Shaping The Beam - ETC Source Four Zoom User Manual

Step 3: Once the desired field angle is established, slide the light baffle forward to soften or
backward to sharpen the edge.
Step 4: Once the field and edge are established, press the locking lever to lock the focus dial into
position.
S h a p i n g t h e b e a m
The beam can be shaped using the shutters (see
rotating the barrel.
P a t t e r n P r o j e c t i o n
The pattern holder slot is on the top side of the barrel and in front of the shutters. It accommodates
A-size, B-size and glass pattern holders (see
A-Size Pattern holder:
holds 3" diameter patterns
N o t e :
Use an optional donut in the accessory holder to enhance pattern projection. Donut diameter range
should be 2.5" to 2.75".
D r o p - I n I r i s S l o t
Drop-in iris slot
The drop-in iris slot is located on the top of the barrel and in front of the pattern holder slot. It
accommodates either a drop-in iris or a motorized pattern device. When the slot is not in use, a
small sheet metal cover secured with two Phillips screws prevents light leakage (see
Step 1: Use a screwdriver to loosen the screws on the drop-in iris slot cover. Do not remove
thumbscrews.
Step 2: Slide the cover completely forward to expose the slot.
Step 3: Insert the iris or motorized pattern device. For an iris, install the flat side toward the
shutters and make sure the iris handle extends from the slot.
6
3.12" Diameter
3.70"
Because the Source Four aperture is 3 inches wide, ETC recommends
using A-size patterns for maximum pattern effectiveness.
Figure 1), a pattern, an optional drop-in iris, or by
Figure 7).
B-Size Pattern holder:
holds 2.5" and 2.75"
diameter patterns
2.75" Diameter
3.70"
Iris
Figure 7
Figure 8
Figure 8).
Source Four Zoom User Manual