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Runco SC-1 Owner’s Operating Manual 61
PRE
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IMINAR
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Image Settings Menu Use options in the Image Settings menu to alter your image without affecting its size or
position. Changes made in this menu are applied immediately and saved when you exit
the menu. Options not available for the projector model or source are disabled and appear
dim (gray).
Contrast: “Contrast” increases or decreases the perceived difference between light and
dark areas of your image (0-100). For best results, keep it under 50. If contrast is set too
high, the light parts of the image lose detail and clarity. If set too low, the light areas will
not be as bright as they could be and the overall image will be dim. For best results, start
with a low value and increase so that whites remain bright but are not distorted or tinted
and that light areas do not become white (“crushed”).
Brightness: “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 (“crushed”). Conversely, high brightness changes black
to dark gray, causing washed-out images.
Gamma: “Gamma” is a global setting that determines how gray shades are displayed
between minimum input (black) and maximum input (white) for all signals. The normal
gamma setting of 2.2 is correct for virtually 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.
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 reintroduce a certain degree of noise.
Noise Reduction: Noise Reduction is similar to the “Filter” control, but operates in the
post-sampling digital domain with a more subtle effect. Higher settings are most useful for
clearing up noisy RGB images such as those from a PC. Adjust as desired, keeping in
mind that reducing noise (which reduces high frequencies) may also soften the image.
Color Space: “Color Space” determines how the color components of an analog input
signal are decoded for accurate color in the display. With the SC-1, this should always be
set to RGB.
The values shown represent where the approximate center of the
image lies in relation to the total number of pixels available
horizontally or vertically. This varies widely according to the signal;
watch the image while adjusting.
Note
If the environment lighting changes, a Gamma adjustment may be
needed (see below).
Note