What is double exposure?

Double exposure refers to multiple exposures on the same negative. It is a skill that many people must play as soon as they touch the camera. That kind of mysterious and ineffable visual effect often makes people indulge in it. Nowadays, middle and high-end automatic cameras have multiple exposure functions, and you can set multiple exposures by using the function settings.

As early as the film SLR era, many photographers and photographers superimposed two or more light negatives through double exposure to achieve the purpose of increasing the illusory effect of the picture. After entering the digital age, it is easier to achieve double exposure. We can import the pictures into the computer, and then use image processing software to superimpose the pictures, so as to achieve the effect of double exposure. Moreover, when overlapping, the pictures can be enlarged or reduced locally, which greatly increases the convenience of double exposure.