Christie Mirage M Series User Manual page 65

• COLOR ENABLE
Select which color or colors you want to see in the display, useful while working with color temperature white
levels or input levels.
used. If color temperature is set up based on the internal test patterns, you can set up input levels for a given
2)
source so that it matches the color temperature of the internal test patterns.
ADVANCED IMAGE SETTINGS - S
Use the Advanced Image Settings submenu to make the adjustments necessary for lesser-used but more
specialized applications on your projector.
GAMMA SETTINGS - S
The system offers two types of gamma correction. Gamma correction can be applied to a specific source to
correct for luma encoding. This is a channel setting and reapplied every time the same signal is detected. This
is the 'Gamma' control. On the other hand the system also provides a global Gamma Correction control. The
global control offers an offset applied to all channels. This offset is used to compensate for changes in ambient
conditions such as ambient light in the room and projected material.
• GAMMA CORRECTION - Applies a global offset to all gamma settings for each channel. It affects the
shape of the curve by performing a linear transform toward a gamma curve of 1.0 while the control is
increasing and likewise a linear transform toward a gamma of 3.0 as the control is decreasing. The control
should only be adjusted to compensate for ambient conditions. To correct a particular source only, use the
Gamma control.
• GAMMA - Select the base gamma table for a given source.
Select from one of the standard tables, a custom gamma
function, or select an arbitrary gamma table that has been
downloaded to the projector.
needed to do this.
The 2.22 curve is a power curve typically used to encode graphics
and video sources, see
curve (auto setup default) is a modified 2.22 curve with a small
linear section in the black that enhances the detail in darker areas
of the projected content. Typically standard or 2.22 is used for all
sources. Alternatively, if neither default is ideal, apply a simple
gamma curve by defining a custom power function and slope. Select Gamma Function from the drop down
list to enable the Gamma Function and Gamma Slope controls. For more complex non-standard gamma
curves, a user-defined curve created externally and downloaded to the projector can be used (requires separate
PC-based Arbitrary Gamma software application to create the table and the Web UI to download it).
any of these special user curves have been installed, their names will appear in the Gamma Table pull-down
list.
• GAMMA FUNCTION - Defines the base gamma power curve used when the base gamma table value is set
to Gamma Function. This value, combined with gamma slope setting determines the base gamma table to
be used as the custom base table. The curve is generally a power curve with a small linear segment at the
bottom defined by the slope.
• GAMMA SLOPE - This control defines a slope to be used for the base custom gamma table for a small
section at the bottom of the curve. This slope can be used to bring in or out the low level blacks in the image.
This slope combined with the gamma function, define the custom gamma table.
Mirage M Series User Manual
020-100575-02 Rev. 1 (11-2010)
Input levels apply for the current source only, but for any color temperature
NOTES: 1)
UBMENU
UBMENU
A separate PC utility is
NOTE:
Figure 3-28 Gamma Curve. The 'standard'
Section 3: Operation
F 3-28 G C
IGURE AMMA URVE
If
NOTE:
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