User Guide

Chapter 3
76 VRS User’s Manual
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 Viewer 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. 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 panel settings
1 From the VRS Adjustment Controls, select the Clarity panel.
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.
2 In the Brightness text box, VRS displays the current brightness setting. To
change the setting, do one of the following:
• Click the arrows on the Brightness text box to increase or decrease the
brightness level.
• Click in the Brightness text box and type in a value.
• Move the Brightness slider control up or down to select a value.