What does 30 seconds exposure mean?

30-second long exposure refers to the process of using the shutter to open for a long time in photography, so that the CCD chip of the camera can receive light continuously within 30 seconds. This technology can make all the light in the picture accumulate together, and make the whole picture produce richer light and shadow changes. It is often used to shoot night scenes, star tracks, running water and other scenes, highlighting the details that are dynamic or difficult to observe with the naked eye.

Using 30-second exposure requires attention to some skills and equipment. First, you need to lock the camera with a tripod to avoid shaking the picture. Secondly, you can consider using a hood or filter to control the exposure of the picture. In the case of insufficient light, you can also try to add some artificial light sources in the background, such as flashlights, flashlights and so on.

In addition to shooting skills, 30-second long exposure can also be used for creative photography. Different exposure time, different light sources and different motion modes can all show completely different effects in the picture. Through many attempts and exercises, photographers can explore their own style and creativity in this technology and shoot unique and wonderful works.