Calibration, Display color, Pre l iminar y – Runco SIGNATURE CINEMA SC-50D User Manual

Page 81

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Signature Cinema™ SC-50d/SC-60d Installation/Operation Manual

IMINAR

Use the Calibration menu to perform advanced picture quality adjustments. This menu
should be used by ISF-certified technicians only.

To recall the ISF Night or ISF Day settings, select “ISF Night” or “ISF Day” from the
Memory Presets menu (see page 62) or use the corresponding remote control buttons.

Display Color: Use the Display Color settings to adjust the color balance at the DHD
Controller output. These settings are saved independently for each input and display
mode.

• Gain: Use the Gain controls to correct color imbalances in the bright areas of the

image. A good way to do this is to use a test pattern consisting mostly of solid white
areas, such as an 80 IRE “window” pattern. If the white areas contain traces of red (Pr),
green (Y) or blue (Pr), decrease the Gain for that color.

• Offset: Use the Offset controls to correct color imbalances in the dark areas of the

image. A good way to do this is to use a test pattern consisting mostly of dark gray
areas, such as a 30 IRE “window” pattern. If the gray areas contain traces of red (Pr),
green (Y) or blue (Pr), decrease the Offset for that color.

• Gamma: Select Gamma from the Display Color menu to choose a de-gamma curve.

Used correctly, the Gamma control can improve contrast while maintaining good
details for blacks and whites. 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 improves 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.

• Mode: With the SC-50d/SC-60d, two Gamma adjustment modes are available:

Simple or Advanced. The two modes are mutually exclusive; when you select the
Simple mode, the Advanced selection in the Gamma menu is grayed out. Likewise,
when you select Advanced, the Simple selection is grayed out.

• Simple: Use the Simple Gamma control to perform gamma correction at the display

according to a simple power law gamma function. The value chosen here
corresponds to the power variable in this equation:

Output = Input

Power

The DHD Controller applies this gamma curve to all three primary color channels
(red, green and blue).

• Advanced: To select a custom gamma curve, select Mode from the Gamma menu

and set it to Advanced. Then, select Advanced from the Gamma menu to select one
of up to 20 pre-programmed gamma tables. Custom gamma tables provide the
ability to perform complex, non-linear gamma correction on each primary color
channel independently of the others.

ISF Settings

You must enter a passcode to access the Calibration menu.