Photoshop

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 button at the bottom of the Layers palette.

      Note: 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 palette 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.