Operation Manual

• By default, the Highlights value slider is set to 0.0. Double-click the number in the value
slider, then enter a value from 0.0 to 100.0 and press Return.
Use the Highlights slider and value
slider to adjust the brightness
values in the image’s highlights.
Aperture isolates the areas of the image with highlights and updates them as you change
the parameter value.
Adjusting Brightness Values in the Shadow Areas of the Image
Adjusting the shadow areas is necessary when the shadow areas in an image are
underexposed. A good example is an image shot in a doorway, where the background
is correctly exposed but the foreground is a little underexposed. Adjusting the shadows
lightens the pixels in the shadow areas only, bringing out detail that would normally have
been shades of black or dark gray.
Before Shadows adjustment After Shadows adjustment
To adjust the shadows in an image
1 Select an image.
2 In the Highlights & Shadows area of the Adjustments inspector or the Adjustments pane
of the Inspector HUD, adjust the Shadows parameter by doing one of the following:
• By default, the Shadows slider is set to the left side of the slider control. Drag the slider
to the right to lighten the shadow areas of the image, and drag the slider back to the
left to reduce the lightening effect in the shadows.
• Click the left or right arrow in the Shadows value slider to change the brightness of the
shadows in the image by 5 percent increments, or drag in the value field.
530 Chapter 17 Making Image Adjustments