How to take long exposure and time-lapse photography

Cameras are generally set to shutter priority mode. The shutter speed slows down. That is, the corresponding value becomes larger. Generally, the maximum shutter time of a camera is 4 seconds. Some cameras have 60 seconds, and even a SLR has a B door, which can be exposed for a long time.

Of course, the slower the shutter speed, the tripod should be used, or the tripod should be used for assistance, so that the feeling of traffic on the street can be discharged at night.