Editing Multiple exposure (section)

==Long exposures==
{{main|Long-exposure photography}}

With traditional film cameras, a long exposure is a single exposure, whereas with electronic cameras a long exposure can be obtained by integrating together many exposures. This averaging also permits there to be a time-windowing function, such as a Gaussian, that weights time periods near the center of the exposure time more strongly. Another possibility for synthesizing long exposure from a multiple exposure is to use an [[exponential decay]] in which the current frame has the strongest weight, and previous frames are faded out with a sliding exponential window.