Exclude channels from blending, Specify a tonal range for blending layers – Adobe Photoshop CC 2014 v.14.xx User Manual
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Note:
Advanced blending options
Select Transparency Shapes Layers to restrict layer effects and knockouts to opaque areas of the layer. Deselecting this option, which is
always selected by default, applies these effects throughout the layer.
Select Layer Mask Hides Effects to restrict layer effects to the area defined by the layer mask.
Select Vector Mask Hides Effects to restrict layer effects to the area defined by the vector mask.
4. Click OK.
Exclude channels from blending
You can restrict blending effects to a specified channel when you blend a layer or group. By default, all channels are included. When using an
RGB image, for example, you can choose to exclude the red channel from blending; in the composite image, only the information in the green and
blue channels is affected.
1. Do one of the following:
Double-click a layer thumbnail.
Choose Layer > Layer Style > Blending Options.
Choose Blending Options from the Add A Layer Style icon
at the bottom of the Layers panel.
To view blending options for a text layer, choose Layer > Layer Style > Blending Options, or choose Blending Options from the Add
A Layer Style button at the bottom of the Layers panel menu.
2. From the Advanced Blending area of the Layer Style dialog box, deselect any channels you do not want to include when the layer is
blended.
Specify a tonal range for blending layers
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