Christie Roadster S+ User Manual page 65

NOTE: If the environment lighting changes, an adjustment of Gamma is
recommended (see below).
Brightness
( Press
SHORT CUT:
Bright
"Brightness" increases or decreases the amount of black in the image (0-100). For
best results, keep close to 50. Start with a high value and decrease so that dark areas
do not become black (i.e., are "crushed"). Conversely, high brightness changes black
to dark gray, causing washed-out images.
NOTE: Brightness should be adjusted before contrast, as Brightness setting affects
the contrast setting.
Gamma
Press
(
SHORT CUT:
Gamma
"Gamma" is a global setting that determines what gray shades are displayed between
minimum input (black) and maximum input (white) for all signals. A good gamma
setting helps to optimize blacks and whites while ensuring smooth transitions for the
"in-between" values utilized in other
colors. Thus, unlike "Brightness" and
"Contrast" controls, the overall tone of
your images can be lightened or darkened
without changing the extremes, and all
images will be more vibrant while still
showing good detail in dark areas.
Gamma is used to fine-tune the gamma
table currently in use, ranging from 1 – 3 (2.2 = default). If excess ambient light
washes out the image and it becomes difficult or impossible to see details in dark
areas, lower the gamma setting to compensate. This will improve contrast while
maintaining good details for blacks. Conversely, if the image is washed out and
unnatural, with excessive detail in black areas, increase the setting. In high ambient
light conditions, lower gamma may produce better results than higher gamma.
Gamma of 2.2 (default) indicates the gamma table has not been adjusted. For more
information, refer to Advanced Image Settings submenu, Gamma Table. Again, good
gamma improves contrast while maintaining good details for blacks.
Filter
The proper filter setting is automatically set for virtually all
signals, and rarely needs to be changed. It applies a low pass
filter for noise reduction in the incoming input signal,
particularly for HDTV or SDTV. Applied in the analog domain
before sampling, this filtering removes high frequencies and thus
reduces pixel phase noise (note this also reduces signal bandwidth). Override only if
standard pixel tracking and phase adjustments do not adequately clear up a "noisy"
video signal, or if a graphics signal appears overly "soft". Both instances indicate that
"Filter" may be set to the wrong option.
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Roadster/Mirage S+ User's Manual
OPERATION
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