Christie Mirage S+/HD/WU User Manual page 83

NOTE: If the environment lighting changes, an adjustment of Gamma is recommended (see below).
Brightness
Short Cut: Press
Select Brightness from the Image Settings menu. "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
Short Cut: Press
Gamma slidebar in the menu.
Select Gamma from the Image Settings menu. "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 settings controls, the overall tone of your images can be lightened or
darkened without changing the extremes, and all images display more vibrantly while still showing good detail
in dark areas.
Gamma fine-tunes the gamma table currently in use, ranging from 1- 3 (default = 2.2, indicating that the
chosen gamma table has not been adjusted). 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 improves
contrast while maintaining good details for blacks.
Conversely, if the image is unnatural with excessive detail in black areas, increase the setting. For more
information, refer to the
and good details in very dark areas.
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.
Detail
"Detail" adjusts the sharpness of a video image so that edges remain clearly defined. It can be particularly
useful if a significant "Noise Reduction" adjustment has caused the image to appear too soft. Adjust until the
display is as sharp as desired, keeping in mind that because "Detail" adds some high frequencies back into the
image, it can also re-introduce a certain degree of noise.
Roadster, Matrix WU, Mirage S+/HD/WU User Manual
020-100002-06 Rev. 1(04-2011)
on the standard IR remote and adjust the Brightness slidebar in the menu.
Bright
on the standard IR remote and adjust the
G am m a
Advanced Image Settings submenu; Gamma
Section 3: Operation
Table. Again, look for good contrast
1.
2.
3.
4.
5.
Off
RGB
HDTV
EDTV
SDTV
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