User Guide

Operating VRS
VRS User’s Manual
47
Brightness Text Box
When the VRS Interactive Properties dialog is launched, the Brightness numeric text
box on the Clarity tab indicates the current Brightness setting. If desired, the
Brightness setting may be changed manually using the Brightness numeric text box.
Brightness may be set from 0 (very dark) to 100 (very bright) for black and white,
grayscale, or color images. Keep in mind, though, that the Manual brightness setting
is not shared between black and white, grayscale, and color modes. Changing the
value of the manual brightness setting in black and white mode does not affect the
value of the manual brightness setting in grayscale or color mode, because VRS keeps
these values separate.
Contrast Text Box
When the VRS Interactive Properties dialog is launched, the Contrast numeric text
box indicates the current value of the Contrast setting. The Contrast value of an image
may be set manually using the Contrast numeric text box. The Contrast value may be
set from 0 (very low contrast) to 100 (very high contrast). Similar to the Brightness
setting, the Contrast setting is not shared between black and white, grayscale, and
color modes. You must enter a separate Contrast value for each mode.
Gamma Slider and Gamma Correct Text Box
The Gamma slider and Gamma numeric text box indicate the current value of the
Gamma setting, which can range from -100 (very dark gamma) to +100 (very light
gamma). Gamma may be set for black and white, grayscale, and color images, but is
only shared between black and white and grayscale modes. This means that changing
the value of the Gamma setting while in black and white mode also changes the
Gamma setting for grayscale mode because VRS internally uses a single value to
represent gamma for black and white and grayscale.
The Gamma setting is not shared between non-color and color modes, however.
Changing the value of the Gamma setting in black and white mode does not affect the
value of the Gamma setting in color as VRS uses a dedicated value to represent color
gamma.
X To update the Clarity tab settings
1 From the VRS Interactive Properties dialog box, select the Clarity tab.
a To adjust the contrast and brightness at the same time, click within the
boundaries of the brightness/contrast grid, then insert the pointer so that
the intersection of the crosshairs represents the desired values for
brightness and contrast. For best results, stay within the blue rectangle.
b To adjust the contrast and brightness separately, skip to the next step.