Christie Mirage S+14K User Manual page 66

OPERATION
3-32
Roadster / Mirage S+ User's Manual
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This control applies a default video or graphics gamma table or
GAMMA TABLE:
"curve" to your images, controlling the intensity of midlevel colors and producing
maximum contrast, brightness and color
performance. As shown at right, the
graphics curve is a simple power curve
while the video curve has a linear segment
near black to compensate for increased
blacklevels typical of video signals.
Although the projector automatically
applies either the graphics or video curve
according to what type of incoming signal is detected, in some cases you may wish to
override this default and use graphics gamma for a video source or video gamma for
a graphics source. Alternatively, if neither default is ideal, you may prefer to apply a
user-defined custom gamma curve that has been created externally, named, and
downloaded to the projector (requires separate PC-based Arbitrary Gamma and
KoRE Librarian software applications). If any of these special user curves have been
installed, their names will appear in the Gamma Table pull-down list.
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:
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 —
to all displays. Color temperatures are expressed in degrees Kelvin (3200-9300K),
In "Select Color
Adjust to apply a specific and accurate color temperature