Operation Manual

Adjusting Low Tonal Width for Highlights & Shadows Controls
You use the Low Tonal Width parameter controls to set the range of shadows that Aperture
adjusts with the Shadows controls. Increasing the Low Tonal Width parameter value
widens the range of shadow tonal values that are adjusted toward the midtones. If you
want to limit the Shadows adjustment to a range of shadow values that are closer to
black, you decrease the Low Tonal Width parameter value.
Before Low Tonal Width adjustment After Low Tonal Width adjustment
(increased low tonal width)
To adjust the low 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 Low Tonal Width
slider and value slider to
adjust the range of shadow
tonal values affected by
a Shadows adjustment.
2 Adjust the Low Tonal Width parameter by doing one of the following:
• Drag the Low Tonal Width slider to the right to increase the tonal range of the Shadows
adjustment, and drag the slider back to the left to reduce the tonal range.
• Click the left or right arrow in the Low Tonal Width value slider to adjust the tonal range
of the Shadows adjustment by single increments, or drag in the value field.
The left arrow reduces the tonal range, and the right arrow increases it.
537Chapter 17 Making Image Adjustments