The second exposure of digital camera shooting night scene?

Multiple exposures, also known as multiple exposures, as the name implies, are two or more exposures in the same picture, thus producing a special visual effect. When operating, on the basis of one exposure of a picture, press the multiple exposure button with the middle finger and pull the film winding wrench with the thumb. At this time, neither the film feeding gear nor the film bearing tube will rotate, nor will the counter move, and the film will remain motionless, but the shutter will be closed again and the shutter release button will be pressed to achieve the purpose of multiple exposures of the same photo. Multiple exposures can generally reach 9 times.

It can be said that the multiple exposure function is the product of the film camera era. In traditional film SLR cameras, multiple exposure is a very important function and a unique photography technology. The principle of multiple exposure technology is to shoot multiple images on one film, so that an object can appear in the picture many times, and it can shoot magical effects out of nothing. This is its unique charm and attracts many people to use this technology.

Second, change the focal length of multiple exposures.

Thirdly, multiple exposures by occlusion method.

Fourthly, the superposition method is used for multiple exposures.