The Image File blend node is used to import an external image file for compositing (figure 1). 



Image File



Figure 1: An Image File Output AOV node blended over a series of Render AOV nodes


Image File Parameters

Enabled - Determines whether the image file is active or not.

Color Space - Sets the color space for the imported image. 

Premultiplied Alpha - Determines whether the RGB channels have been premultiplied by the alpha channel. 

Effects - Provides the ability to stack additional Output AOV nodes to this node using blending settings.

Blending Settings - Provides typical blending options used in the compositing process.