Action: Auto By A ch Duplicate first document Convert Mode To: Lab color mode With Flatten Duplicate current layer Set current layer To: layer Name: “A channels” Select a channel Set Selection To: all Copy Select lightness channel Set Selection To: none Paste Anti-alias: none Select lightness channel Levels With Auto Gaussian Blur Radius: 0.1 pixels Set Selection To: all Copy Select a channel Paste Anti-alias: none Select b channel Paste Anti-alias: none Show lightness channel, a channel Select Lab channel Set Selection To: none Set current layer To: layer Mode: linear light Play action “Flat Curve” of set “CBsActions-JacobsLadder” Play action “Zoom” of set “CBsActions-JacobsLadder” Select layer “Curves 1”