Projection effect
Projection effect may refer to:
- Front projection effect, in-camera visual effect
- Rear projection effect, in-camera visual effect
- Insolation#Projection effect, the amount of sunlight onto a portion of the Earth relative to its tilt
- In astronomy, a type of observational illusion caused by viewing distant objects or phenomenon from a particular perspective. Examples include superluminal motion, the retrograde motion of the planets, and optical double stars.