Typical Gray Bar Pattern For Adjusting Contrast - Planar PD520 Owner's Operating Manual

PLUGE patterns vary but generally consist of some combination of black, white
and gray areas against a black background. The example above includes two
vertical bars and four shaded boxes.
Select Brightness from the Image Adjust menu. Using the left- and right-arrow (
) buttons, adjust the brightness so that:
• The darkest black bars disappear into the background.
• The dark gray areas are barely visible.
• The lighter gray areas are clearly visible.
• The white areas are a comfortable level of true white.
• The image contains only black, gray and white (no color).
Contrast: On your external test pattern source, select a stepped, gray-bar
pattern like the one shown in Figure 4-3.
Figure 4-3. Typical Gray Bar Pattern for Adjusting Contrast
Select Contrast from the Image Adjust menu. Using the left- and right-arrow (
) buttons, adjust the contrast to a point just below which the white rectangle
starts to increase in size.
Brightness and contrast controls are interactive. A change
Note
to one may require a subtle change to the other in order to
achieve the optimum setting.
30 Planar PD520 Owner's Operating Manual