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NOTE: Gamma does not normally require adjustment and is intended for
experienced users only.
The "Gamma" option affects the shape of the curve determining what gray shades are
available for a given amount of signal input between minimum (black) and maximum
(white). Different curves can improve performance for certain kinds of source input
and applications. Generally the best gamma curve is one that produces maximum
contrast, brightness and color performance for the current signal and ambient lighting
conditions.
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optimum viewing conditions for virtually all types of images, including video, HDTV
and computer graphics. "Default" is the only Gamma setting available when using
the Adjust Primary Colors feature—see 3.9, Using Multiple Projectors for details.
This setting elevates middle gray levels compared to "Default", and
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provides a more gradual rolled-off transition to maximum white. Together, these
differences can improve the appearance of many kinds of images.
This setting elevates low gray levels compared to the "Default" and
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"Enhanced" settings. In high ambient light conditions, details can be seen in the dark
parts of an image that would otherwise be difficult to perceive.
This setting results in a darker image with higher contrast. The gamma
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curve more closely matches the official standard for PAL and SECAM video signals.
This setting is a straight, linear transition from black to white. For normal
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source signals, it results in a picture of low contrast with highly elevated low- and
mid- level grays. It should be used only with sources that have their own pre-applied
gamma control.
Use the Communications, Preferences and Status menus to display and/or alter
overall system parameters rather than those that affect a specific source or channel.
Use the Advanced menu whenever you need to work with or replace the lamp, select
a test pattern, define a new color temperature, or access lesser-used image control
settings intended for experienced users.
Use the checkboxes and pull-down lists in the Communications menu to alter the
methods or types of communication to and from the projector. Refer to "Using
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This setting provides good black levels and high contrast under
Slidebars and Other Controls" subsection if
you need help. Changes made to the
Communications menu will be saved when you
exit the menu.
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