Key

Key

Key generates a mask based on a color key in its input shader. It replaces a selected color or color range with transparency or black, and the rest of the image with white. It can be used in the transparency channel, or in the color channel (affecting the alpha within that channel)

Key Mode

    Changes all colors that match the Key Color into black, all other colors into white. For use in the Alpha or Transparency channel.

Alpha Mode

    Changes the alpha layer of the shader where the Key Color matches to transparent, leave the rest alone. Try it in the Color channel.

Key Color Picker

    Lets you select the color you wish to key out.

Range sliders

    Two tabs each- typically centered around zero, these let you add a tolerance to your color, such as when the backdrop lighting isn't quite perfect.
     

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