Multiple exposure or multiple exposure

A special device, which is that the same frame is exposed ("photographed") several times.
The effect was initially easily achievable when using the Central shutter for cameras of the big format. With the development of photographic equipment and automation of the process of photography the opportunity to display one frame twice, often removed from the cameras, protecting inattentive photographer from accidental damage to the frame (a combined shutter and rewind the film). However, many modern medium format cameras and a 35mm camera professional level included the option of multiple exposures for creative techniques.
For digital camera effect can be implemented using graphical editors by adding different images or multiple use pulsed light during a single exposure. In the first case, the creative possibilities are much greater, for example part of the frame may be deliberately darkened part of the exposure, which allows, for example, several times to portray in the frame of one and the same person.

Translated by «Yandex.Translator»