Section 3: Operation
3-32
020-100001-01 Rev. 01 (04/07)
Advanced Image Settings
— SUBMENU
Use the
Advanced Image Settings
submenu
to make the adjustments necessary for lesser-
used but more specialized applications on
your projector.
GAMMA TABLE:
This control applies a
default
video
,
graphics
or
simple
gamma
table or “curve” to your images, controlling
the intensity of mid-level colors and
producing maximum contrast, brightness and
color performance. As shown at right, the graphics curve is a modified power curve
that will show more detail in darker areas of the projected content while the video
curve has a linear segment near black to compensate for increased black levels typical
of video signals. A simple gamma curve is a
true power curve that does not alter the
contrast or the intensity of mid-level colors.
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 the simple (non-optimized) gamma curve or 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 2.2 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
slide bar or direct key.
NOTES: 1)
If no user curves have been defined and downloaded to projector memory,
only the 2.2 default gamma curve is available here – adjust as desired using gamma
in the main Image Settings menu.
2)
Some graphic material will look best with the
video setting while some video material is best with the graphic setting.
SELECT COLOR ADJUSTMENT:
In “Select Color Adjustment”,
choose an overall color palette for all images. The “Max
Drives” factory default simply drives all three 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 slide bar and applies
its current setting (default = 6500K). If none of the pre-
defined “Select Color Adjustment” options or color temperatures suits 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
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