A transitional technique or optical effect/device in which one shot appears to be “pushed off” or “wiped off” the screen by another shot replacing it and moving across the existing image; also called a push-over; a flip-over (or flip) wipe is when one scene rotates or flips-over to the new scene; wipes were very commonly used in the 30s. The most common uses of the wipe effect is the “Invisible Wipe” where a camera follows a person into another room by tracking parallel to the actor. As the wall passes in front of the camera, the editor has the option of using a wipe to be able to choose any other matching take of the same scene. It is also commonly used in quick camera pans in action sequences, to make a cut invisible. Such wipes can be impossible to see in the finished film.
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