low speed photography

This "low-speed photography" is actually time-lapse photography.

Time-lapse photography, also known as time-lapse photography (English), is a shooting technique that compresses time. It takes a group of photos or videos, and then through photo stitching or video frame extraction, it compresses the process of minutes, hours or even days and years into a short period of time and plays it out in the form of video. In time-lapse photography video, the slow change process of an object or scene is compressed into a very short time, showing a strange and wonderful scene that is usually imperceptible to the naked eye. Time-lapse photography can be regarded as the opposite of high-speed photography.

The process of shooting time-lapse photography with a camera is similar to making a freeze frame, which connects single still pictures in series to get a dynamic video. Long-time freeze time delay shooting. Also known as low-speed photography or fixed-time photography, "time-shrinking" photography. A means to record and reproduce the slow changing process of the scene with obvious changing images at regular intervals. For example, it takes about 3 days and 3 nights for a bud to bloom, which is 72 hours. Shoot one frame of it every half hour, record the subtle changes of flowering action in turn, shoot a total of 144 frames, and then show it at normal frequency (24 frames per second) through the projector, and reproduce the flowering process for 3 days and 3 nights in 6 seconds.