What does a Merge node in Fusion combine?

• A. Audio tracks
• B. 3D models
• C. Color correction
• D. Visual elements

Answer: (D)

In Fusion, the Merge node is all about layering visuals. It takes two inputs—the foreground and the background—and blends them into a single image. This is exactly what you’re doing when you place a title or logo over a clip, or when you composite a keyed subject over a background. The blending is controlled by the operation you choose and can be refined with masks or mattes to reveal or hide parts of either input.

Because it’s about combining visual elements, it isn’t used for audio, which is handled in a separate area, and it isn’t a tool for color correction (that’s done with Color nodes). It’s also not limited to 3D models, though 3D work can be incorporated into a Fusion composition—the Merge itself is the tool that brings visual layers together.