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Curve tool — the graph Pro tool to adjust color.
The curve shows relation between original brightness of each pixel and the resulting brightness (there are five curves — four channels and the composite)
Tap on curve to add node
Channel symbols
Drag node to reshape curve
γ — (gamma) RGB composite R — Red G — Green B — Blue A — (alpha channel) opacity
Drag a node over a neighboring node to remove it You may reset a curve to original state (linear relation) by removing all additional nodes
Input brightness
Cancel Close the tool without applying changes
Confirm Close the tool applying changes
Hide preview temporarily Compare "before vs after"
Channel selector Current channel highlighted in red The curve for selected channel is displayed in its color
Infinite Painter’s Manual
ref: manual_editing_modify_curves_graph
Editing Tools • Modification tools • Page 353
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