In photography and cinematography, a multiple exposure is the superimposition of two or more exposures to create a single image, and double exposure has a corresponding meaning in respect of two images. The exposure values may or may not be identical to each other.
As an analogue technique, the double exposure effect has been around for a while. Fortunately the proliferation of digital photography and the ability of some cameras to create this in situ has made double exposures more popular than ever. What’s double exposure? In theory, it sounds very simple—two different images superimposed on the same film (Image). But once you figure it out, it’s quite beautiful. Double exposure allows for deep, meaningful, and fascinating combinations.