ADVANCED SETTINGS
Click on the Advanced Settings button to view the advanced settings buttons for Highlight / Shadow, Curves, Color Balance, Hue / Saturation / Lightness, Color
Highlight / Shadow
This feature is available when
Click on the Highlight / Shadow button to access the Highlight / Shadow Levels dialog box. You can type values in the text boxes or you can use the mouse to drag the pointer at the bottom of the window to specify the values you want.
The text boxes have the following meanings:
S (Shadow): the darkest point of an image
G (Gamma): the midtones of an image
H (Highlight): the lightest point of an image
Use the Highlight and Shadow settings together to extend the range of color and reveal more detail in a gray or color image.