User Manual

Image Broadway 6 Help
Image Adjustments > Levels Adjustments > Levels > Use Levels to Adjust Tonal
Range
Use Levels to Adjust Tonal Range
Tonal range of an image refers to the range of distribution of the darkest tone (shadow) to the lightest tone
(highlights) with the full range being from 0 to 255. An image with a lot of pixels in the shadow area appear dark
while an image with a lot of pixels in the highlights area appear bright. Tonal Range Adjustment is the redistribution
of pixel tones.
Select the Adjust/Enhance > Levels menu item to open the Levels dialog. The Channel pull down menu is at the
bottom of the dialog.
1.
To adjust tones for a specific color channel, choose one of the Red, Green, and Blue (RGB) options from the
Channel pull down menu.
2.
To adjust highlights and shadows, move the black and white triangles in the Input (top) levels slider inward to
match the lowest and highest values in the histogram. You can do this by adjusting the Input levels on the
composite channel (Value), or on each color channel separately. You can also enter values directly in the Input
levels text boxes. The Input levels text boxes represent the minimum, gamma, and maximum values of the
image.
3.
If you find, for example, the tonal range of the above photo has too mmany dark tones than it is supposed to
have, you can first check off the Preview option. Dragging the gray triangle (gamma) to the left will make the
picture brighter as shown below.
4.