Christie DS+5K User Manual page 58

Section 3: Operation
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Keep in mind that any Gamma Table choice sets the related Gamma value (shown in
the Image Settings menu) to a 2.5 default, where it can be fine-tuned as desired.
Different values (1-3) here indicate that the original gamma table has been adjusted
with either the Gamma slidebar or direct key.
SELECT COLOR ADJUSTMENT:
choose an overall color palette for all images. The "Max
Drives" factory default simply drives all 3 colors at their
maximum level so that they are fully on and cannot be
changed. The two other pre-defined color adjustment
choices—SD Video and HD Video—apply a color gamut
optimized for video sources (standard or high-definition).
Alternatively, you can specify a color temperature. This
enables the adjacent Color Temperature slidebar and applies
its current setting (default = 6500K). If none of the pre-defined "Select Color
Adjustment" options or color temperatures suit your application, select one of four
color gamuts previously defined by a user (User 1, 2, 3, 4). A "User" option applies a
customized color performance in which the user has precisely set the hue and intensity
of each color component in the Color Adjustment by X/Y or Color Saturation
submenus. It is most often needed with multiple-projector applications. Select the
color adjustment producing the best color accuracy for your application and
installation.
To configure a "User" color adjustment (gamut), use either the Color Adjustment by
X/Y or Color Saturation submenu.
NOTES: 1) "Color Temperature" defaults to 6500K until changed. All four "User"
options default to SD Video unless they have been redefined by the user. 2) Factory-
defined color primaries, which ensure consistent color gamut from projector-to-
projector, can be calibrated in the Service menu only. If you suspect alteration, the
factory settings can be recovered with selection of Reset to Factory Defaults? in the
Color Primary Settings submenu within the Service menu (password-protected).
COLOR TEMPERATURE —
all displays. Color temperatures are expressed in degrees Kelvin (3200-9300K), and
utilize different combinations of the projector's original native color primaries to
produce a "coloration" or cast (reddish or bluish) in images—the lower the
temperature, the more reddish the cast; the higher the temperature, the more bluish the
cast. Note that the slidebar is enabled only if you have a source connected and have
selected "Color Temperature" in the adjacent "Select Color Adjustment" pull-down
list in the Advanced Image Settings menu.
The optical aperture inside the projector controls the diameter
OPTICAL APERTURE -
of the light beam passing through the system. With a fully open aperture (slidebar
default of "0"), the maximum amount of light passes through for maximum brightness
in your images. Increase the slidebar setting to reduce the aperture diameter and
maximize contrast ratio instead. Performance of aperture depends on the lens in use.
NOTE: Optical Aperture also appears in the lamp menu.
- No function.
RESERVED
In "Select Color Adjustment",
Adjust to apply a specific and accurate color temperature to
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