Page 413 - Xara Designer Pro X17
P. 413
The Photo Tools 413
Dragging the "White output level" slider inwards slightly alters the green line:
Meaning the maximum white value is brought down slightly.
Brightness Curves
In the Levels dialog you can create a manual brightness curve which provides very
detailed control over brightness levels for any photos.
To create a manual curve just click or drag on the histogram area, and you will see a
control point added and a curve.
Right click on a control point to delete it. Use the TOGGLE CURVE BUTTON to
temporarily disable the curve.
The Curves control is used in combination with the other Levels controls, such as the
central gamma control, and the black and white input and output levels. This means you
can have both a manually entered curve, and still make general adjustments such as
adjusting the gamma, or even the contrast on the main Photo Tool InfoBar.
