Page 408 - Xara Designer Pro X17

408 The Photo Tools

contrast controls. It can lighten shadows without affecting other parts of the picture. It can
adjust the white balance of a picture and also the black and white points.

Channel selector
Auto (= Auto-Enhance in the ENHANCE TOOL)
Reset
Toggle curve
Input levels and Brightness value (Gamma)
Histogram
Visual input levels and brightness adjust (black point, brightness, white point)
Output levels
Black/gray/white point picker
Visual output level adjust
The red histogram graph shows the distribution of brightness levels in the selected
picture, ranging from the blackest shades on the left to lightest (white) shades on the
right. The height of the red graph indicates the amount (i.e. the number of pixels) of each
shade used in the picture. Typically a correctly exposed photograph would show a