PhotoPlus X6 User Guide - Serif

To create an adjustment layer:
Making Image Adjustments 41
1. From the Adjustments tab, select an adjustment. You can choose a default
adjustment or a named preset by expanding the adjustment entry (click ).
2. In the Layers tab, the new adjustment layer is inserted above the active layer.
The adjustment is applied to all underlying layers.
3. From the Adjustments tab, change the applied adjustment layer's settings to
suit your requirements. For example, for a levels adjustment, you can drag
the histogram pointers to alter levels.
Just like other layer types (Standard, Text,
Shape, Filter, but not Background),
adjustment layers can have a mask applied to
them. By default, a mask thumbnail is shown
on the adjustment layer. Select this to apply a
mask to your adjustment layer. (See Using
masks on p. 27.)