The fast motion[1]​[2]​ technique (in English time-lapse) is a very popular photographic technique used in cinematography and photography to show different motifs or events that generally happen at very slow speeds and imperceptible to the human eye. The visual effect achieved in fast motion consists of everything that has been captured moving very quickly, such as the movement of clouds, the opening of a flower, a sunset, etc.

There are two basic methods for making videos with the fast motion technique:

Taking the above into account, in post-production different frame rates per second (FPS) can be freely used to create the illusion of fast motion according to the needs of each person or the effect that they want to show. The following are frame rates for some of the more popular systems:.

This technique has multiple cinematographic and photographic uses, as well as in multimedia, among which the following stand out:.