Difference of exposure time delay photography

Difference of exposure time delay photography

1, different definitions

Exposure time is the time when the shutter is opened in order to project light onto the photosensitive surface of photographic photosensitive materials.

Time-lapse photography is a photography technique that takes an image or video at a low frame rate and then plays the image at a normal or faster rate.

2, the principle is different

Exposure time refers to the time interval from shutter opening to shutter closing. During this period, the object can leave an image on the negative, and the exposure time depends on the need. There is no difference between good and bad, only need.

Time-lapse photography is formed by specifying the time interval of each frame in advance and shooting frame by frame with automatic controller.

3. Post production is different

Time-lapse photography can be reproduced on the screen in a short time under the condition of continuous projection. This kind of lens picture, applied to science and education films, can scientifically and truly explain the process of plant growth; When used in feature films, it is often used to express the joy of the characters, or to indicate the successful end of the plot development.

Exposure time mainly refers to the exposure time of negative film. The longer the exposure time, the brighter and darker the photos generated on the negative. In the case of dark outside light, it is generally required to extend the exposure time (such as night scene).

The faster the shutter speed, the more you can catch the moving object and make it clearly imaged. When the shutter speed is less than one sixtieth of a second, it is best to use a tripod, otherwise the image will be difficult to be clear.

Baidu encyclopedia-timing photography

Baidu Encyclopedia-Exposure Time