Action: LAB chS overlay Duplicate first document Name: “See L-L a-a b-b Overlay” Flatten Image Convert Mode To: Lab color mode With Flatten Image Size Width: 400 pixels Height: 300 pixels Interpolation: bicubic Canvas Size Width: 1204 pixels Horizontal: left Set Selection To: rectangle Top: 0 pixels Left: 0 pixels Bottom: 300 pixels Right: 401 pixels Copy Paste Anti-alias: none Set current layer To: layer Name: “a>a” Select a channel Show lightness channel, b channel Apply Image With: calculation Source: current channel of merged layer Calculation: overlay With Preserve Transparency Hide current layer Select Background Set Selection To: rectangle Top: 0 pixels Left: 0 pixels Bottom: 300 pixels Right: 402 pixels Copy Paste Anti-alias: none Set current layer To: layer Name: “b>b” Select b channel Show lightness channel, a channel Apply Image With: calculation Source: current channel of merged layer Calculation: overlay With Preserve Transparency Hide current layer Select Background Select lightness channel Show a channel, b channel Select Lab channel Apply Image With: calculation Source: Lab channel of merged layer Calculation: overlay With Preserve Transparency Show layer “b>b” Select layer “b>b” Move current layer To: 402 pixels, 0 pixels Select layer “a>a” Move current layer To: 803 pixels, 0 pixels Flatten Image