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Matching Colors
In Multiple Screens
All Projectors
'
In a multiple-projector wall, you will likely want to precisely match image color and
intensity from screen-to-screen so that the wall is as uniform as possible. The first step in
achieving such consistency is to use the Adjust Primary Colors (CSC) menu to fine-tune
each projector's fundamental primary colors—red, green and blue—so that each color
hue and intensity appears exactly the same from projector to projector. Once matched,
these colors work together to essentially create a single new color temperature or "image
cast" that all projectors can attain (range is 5250-6750K). As a final step, you can also
proceed to the Brightness Uniformity control to further optimize color and light
performance by adjusting specific areas of each screen. Both Adjust Primary Colors
(CSC) and Brightness Uniformity can be applied or disabled at any time throughout the
wall, simplifying both the setup and maintenance of a "seamless" wall. Follow the step-
by-step instructions below for adjusting primary colors.
NOTES: 1) During this procedure, look only at the center of each screen. 2) On-line
hints and help can guide you through the procedure. 3) A color meter is helpful but
not required. 4) Color matches are optimized for graphic sources. If using video
sources with radically adjusted primary colors, you may notice a slight posterized or
banded effect in images.—you may have to forfeit some color matching to eliminate
this. 5) Review primary colors upon installation of a new lamp.
Step 1: PRELIMINARY SETUP
1a) SET UP AND OPTIMIZE ALL PROJECTOR SETTINGS.
color temperature at this point, since it will be redefined when adjusting
primary colors, but do set up the projectors in every other aspect. Also make
sure that edges of adjacent screens are very close to one another.
1b) ASSIGN PROJECTOR NUMBERS
unique 3-digit number (see Assigning a Projector #, previous page). You'll
then be able to switch between communicating with an individual projector
(
###) and broadcasting (
NOTE: This projector has no integral keypad. To prevent broadcasting when
you are trying to assign each projector number, use a wired keypad as you
move from projector to projector. Or use an IR keypad, but physically block
the IR sensor on all but one projector at a time as you assign each number.
1c) DISPLAY 100% WHITE FIELD (INTERNAL)
white field test pattern.
Use of the internal white field is strongly recommended. If, however, you still
prefer to use an externally generated white field, set Contrast and Brightness
to 50 for each projector. Then, in the Input Levels menu, set input levels
correctly for each projector while displaying an external 256-step grayscale:
1. Enter a checkmark for the Auto Input Level option
2. Wait for the 6 values (blacklevels and drives) to stabilize.
3. Delete the checkmark and leave the Input Levels menu. Input
NOTE: Avoid using a digital source (particularly YUV) for the white field.
1d) USE THE SAME LAMP POWER
(Power or Intensity). Set all to the same desired setting (default = 500 watts).
NOTE: Do not try to match the perceived light output at this point.
. Make sure each projector is assigned a
levels are now correct for this source. Switch to the external
white field for the remainder of this procedure.
. Set all projectors to the same Lamp Mode
Note that you can ignore
) at any time.
. On each screen, display the internal
DLV1280 DX User's Manual
OPERATION
3-51
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