Apple MA434Z/A User Manual - Page 638

Add The Add node adds color to the R, G, B, A, or Z channel. Specifically, this node adds color to black areas, including those beyond the image frame, in case you move the image later. Any correction that occurs outside of the DOD can be corrected with the SetBGColor node. Shake's color is described in a range of 0 to 1, so adding -1, -1, -1 makes your image completely black. If you add the fifth value, depth, you effectively add a Z channel with your add value to the image. Parameters This node displays the following controls in the Parameters tab: Color A color control that lets you pick a color to add. alpha Adds to or subtracts from the alpha channel. depth Adds to or subtracts from the Z channel. Brightness The Brightness node is simply a multiplier on the RGB channels. It differs from Fade in that Fade also affects the alpha channel. For individual channel control, use Mult. You can also use this node to convert your image to a single-channel alpha image by using a brightness of 0. Parameters This node displays the following control in the Parameters tab: value A slider you use to specify the value to multiply the image by. This control simultaneously multiplies the RGBA channels. 638 Chapter 23 Color Correction