Runco RS-900 Owner's Operating Manual page 76

Operation
Generally, higher Gain settings reduce the image contrast; higher
Note
Offset settings reduce the image brightness.
Advanced Options: For more precise control over picture quality, select Advanced
Options from the ISF menu and press ENTER.
• Image Enhance: The Image Enhance menu gives you options for improving the
quality of standard-definition, 480i images. (For 480p and higher-definition images, the
controls in this menu are disabled.) Keep in mind that these controls add frequencies
that are not present in the original signal, and may make images appear "noisy" if
misused.
• DNR: Use the or
useful for clearing up noisy images from interlaced SD sources. Adjust as desired,
keeping in mind that reducing noise (which reduces high frequencies) may also
soften the image.
• Detail Enhance: Use the Detail Enhance control to improve the apparent horizontal
and/or vertical resolution of the image.
• Luma Enhance: Use the Luma Enhance control to improve the apparent brightness
of the image.
• Chroma Enhance: This control adds chroma (color information) to the input signal
and can make colors appear more vibrant and saturated.
• Black Threshold: This control compensates for incoming elevated black levels
present in certain video signals, and ensures that blacks in the display are neither
"crushed" (where dark grays appear black) nor excessively elevated (where blacks
appear dark gray). By default, the projector automatically determines the best setting
according to the type of incoming video signal:
• 0 IRE: Used for DVD output with "enhanced black," SECAM, most PAL standards
and Japanese NTSC.
• 7.5 IRE: Used for most NTSC video signals.
For some types of video, you may want to override the setting. Generally, if black
appears crushed when brightness = 30, choose "0 IRE." If black appears excessively
elevated, use "7.5 IRE."
• Gamma Selection: The normal gamma setting of 2.2 is correct for almost all signals
and conditions. 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.
Again, good gamma improves contrast while maintaining good details for blacks and
whites.
button to adjust the Digital Noise Reduction (DNR). DNR is
62 Runco RS-900 Owner's Operating Manual