Is slow door and slow speed the same thing in photography?

This is one thing. A slow gate generally refers to a long exposure of more than one thirtieth of a second. Under the slow door, you can create many special photographic effects according to your own ideas. For example, let running water melt like cream, let sports figures compare with reality, and can also be used to shoot star tracks and so on.

In the digital age, because long-term exposure will increase the noise of the picture, and there is a risk of battery power failure if the exposure time is too long, many people now use automatic interval multiple exposures instead of long-term exposure, and finally synthesize them in the later stage.