There are a range of adjustments which can be applied to your design as a new layer for corrective or creative purposes.
Adjustments are applied from the Adjustments Studio and most include customisable settings alongside general adjustment options.
Adjustment layers only affect layers which are below them. Alternatively, you can make an adjustment a child of a layer (or layer group), thereby affecting that layer (or layer group) only.
Some adjustments (i.e., Curves, Levels, or Channel Mixer) can be made in any colour space independently of the document colour space.
The following general settings are available from all adjustment dialogs:
Merge—merges the current adjustment layer with the layer immediately below it in the layer order.
Reset—reverts all adjustment settings to default.
Delete—closes the context toolbar and deletes the adjustment layer, removing the adjustment.
To apply an adjustment:On the Adjustments Studio, select an adjustment.
The adjustment is added directly above the selected layer or at the top of the stack if no layer was selected.