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op_brightness

Adjust brightness. Decreases or increases the image brightness.
op_brightness= * adj *
adj
Brightness adjustment (-100…+100 int).

Properties

Layer command. Applies to the current layer or to the composite image if layer=comp . Ignored by effect layers. CMYK images or layers are converted to RGB before the operation is applied.

Default

op_brightness=0 , for no change of brightness.

Example

Darken the background of an image slightly to emphasize the foreground content:
http://server/myRootId/myImageId?wid=500&layer=0&maskUse=invert&op_brightness=-10&layer=1&src=myRootId/myImageId