39. DOUBLE EXPOSURES AND COMPOSITES
WHEN TWO OR more photos are blended together the result is referred to as a double-exposure effect or a composite image. There are many photo apps available for the iPhone that make this type of image blending easy.
Double-Exposure Blending
Back in those thrilling days when cameras used film and not pixels, a double exposure was created when a frame of film that had already been exposed with one image was exposed again with another scene. On some cameras this was an intentional operation, but on cheap cameras it was usually accidental; if you forgot to advance the film after taking a shot, you would get an unplanned ...
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