What's the difference between slow photography and time-lapse photography?

The difference between slow photography and time-lapse photography;

1, slow is to slow down the shutter speed to get the desired effect. Time-lapse photography takes a picture every few seconds, and even dozens of pictures are taken for dynamic display.

2. Slow photography requires a tripod to fix the camera before shooting.

3. Time-lapse photography mainly focuses on natural scenery, urban humanities and biological activities. In nature, such as cell division, egg hatching, solar eclipse, cloud change, astronomical geography, urban change, urban life, transportation, scientific research and other topics.

4. Slow photography uses a shutter speed of 1/30 seconds or less. When slow photography is used, moving objects will leave moving images on the negative when exposed.

Extended data

First, the definition and explanation of time-lapse photography

Time-lapse photography is also called time-lapse photography and time-lapse video recording. It is a kind of time-compressed shooting technology, which is also called time-reduced video at present. 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. Time-lapse photography is usually used to shoot urban scenery, natural scenery, astronomical phenomena, urban life, architectural manufacturing, biological evolution and other topics. At present, in addition to cameras, mobile phones and driving recorders also have this function.

Second, matters needing attention in time-lapse photography

1, stability is overwhelming. Be sure to fix the camera firmly on a solid tripod to avoid the camera shaking due to wind and other reasons, which will lead to shooting failure.

2. Avoid unnecessary sundries from entering the screen. If shooting on the road, in order to prevent pedestrians from entering the picture, the camera must be placed away from the sidewalk.

3. Prepare enough spare batteries and memory cards. Time-lapse shooting usually takes several hours or even dozens of hours, so it is necessary to prepare enough accessories according to the length of the required material. If conditions permit, it is best to turn on the alternating current to shoot.

4. Pay attention to the protection of the machine. Because it takes a long time, in order to protect the safety of the camera and avoid the damage caused by natural and human factors, we must pay attention to taking good care of the camera when shooting in time delay, and avoid exposure and low temperature at the same time.

Third, the definition and explanation of slow photography

1904, Mary's students, French Boer and Nogai, invented slow photography. They found that the film obtained by shooting at a speed lower than the normal frequency reflected the action faster than the actual situation. This is slow photography. The principle is the trick photography technique of shooting material changes or moving objects at the shooting frequency of 20 ~ 8 frames per second. If the shooting frequency is reduced and the projection speed is still 24 frames per second, a rapidly moving lens picture can be presented, giving the audience a sharp, tense and exaggerated atmosphere and impression.

Fourth, the shooting skills of slow photography

1, using a slow shutter, the camera generally needs a bracket, and it is best to use a tripod or a monopod to stabilize the camera. 1/30 seconds below all levels of shutter speed is very slow. Which level to use depends on the moving speed of the subject and the picture effect to be displayed. If the selection speed is too slow, the image is likely to be completely blurred and people can't see it clearly; The speed of choice is too fast, and the sense of movement is lost. Therefore, if you are not sure, you can use several shooting files to find the best shutter speed, which will not blur the photos, but also show a certain sense of movement.

2. According to the shooting method, actually shoot with a slow shutter. It is different from the former method in that the former is a fixed camera, which allows moving objects to pass in front of the camera lens and leave moving images on the negative, while the latter is a moving camera, which moves with the movement of the moving objects. When the moving object is at the same speed as the moving camera, the moving object is relatively static, and the image left in the photo is also static, while the scenery around the moving object becomes a "moving" scene because of the motion of the camera. This kind of relative motion makes the original static scene leave a fuzzy moving image on the negative, giving people a sense of movement.

References:

Baidu Encyclopedia-Time-lapse photography; Baidu encyclopedia-slow photography