3.3

Table Of Contents
Chapter 17 Making Image Adjustments 372
Adjusting the Levels of the Green Color Channel
You adjust the levels of the green color channel when you want to remove green and magenta
color casts in the image.
Before Green Levels adjustment After Green Levels adjustment
(moved Gray Levels slider right)
Green adjustment Eect
Move Black Levels slider right. Adds magenta to the shadows, removing green.
Move Gray Levels slider left. Adds green to the midtones, removing magenta.
Move Gray Levels slider right. Adds magenta to the midtones, removing green.
Move White Levels slider left. Adds green to the highlights, removing magenta.
Adjusting the Levels of the Blue Color Channel
You adjust the levels of the blue color channel when you want to remove blue and yellow color
casts in the image.
Before Blue Levels adjustment After Blue Levels adjustment
(moved White Levels and Gray Levels sliders left)
Blue adjustment Eect
Move Black Levels slider right. Adds yellow to the shadows, removing blue.
Move Gray Levels slider left. Adds blue to the midtones, removing yellow.
Move Gray Levels slider right. Adds yellow to the midtones, removing blue.
Move White Levels slider left. Adds blue to the highlights, removing yellow.