Operation Manual

To adjust the high tonal width of the Highlights & Shadows controls
1 If necessary, click the Advanced disclosure triangle to show the advanced Highlights &
Shadows controls in the Adjustments inspector or the Adjustments pane of the Inspector
HUD.
Use the High Tonal Width
slider and value slider to
adjust the range of highlight
tonal values affected by a
Highlights adjustment.
2 Adjust the High Tonal Width parameter by doing one of the following:
• Drag the High Tonal Width slider to the right to increase the tonal range of the
Highlights adjustment, and drag the slider back to the left to reduce the tonal range.
• Click the left or right arrow in the High Tonal Width value slider to adjust the tonal
range of the Highlights adjustment by 5 percent increments, or drag in the value field.
The left arrow reduces the tonal range, and the right arrow increases it.
• By default, the High Tonal Width value slider is set to 40.0. Double-click the number in
the High Tonal value slider, then enter a value from 0.0 to 100.0 and press Return.
Aperture uses the new High Tonal Width setting to determine the range of highlight
tonal values that are taken into account during a Highlights adjustment. The tonal range
begins at pure white, and increasing the High Tonal Width parameter value broadens
the tonal range to include tonal values closer to the midtones.
Adjusting Midtone Contrast for Highlights & Shadows Controls
You use the Mid Contrast parameter controls to adjust the contrast of the midtones.
535Chapter 17 Making Image Adjustments