What should I pay attention to when taking exposure?

The camera is set up on a tripod, and then the scenery that should be taken is arranged in the picture through the viewfinder as required. After taking the view, fix the camera on the tripod to make it inactive. When shooting, use the cable release to control the opening and closing of the shutter (or use the lens cover to control the open shutter) to obtain the appropriate exposure time.

Second, multiple exposures

The operation flow is the same as above, except that the exposure is not completed at one time, but is exposed on the same negative for more than two times, and the shooting work is completed. Multi-exposure is a method used only when one exposure cannot complete the shooting work. If conditions (lighting, environmental conditions, timing, etc.) are met. ), one exposure is ideal. But sometimes in order to achieve a special effect, it is necessary to use multiple exposures to shoot some scenes in each exposure.

When shooting, we should pay attention to the following aspects:

(1) When mastering the exposure, we can separate the light intensity from other scenes, so that the darkest scene is exposed more first and the brightest scene is exposed less later, which can make up for the uneven exposure.

(2) When some scenes can't be exposed first or multiple times, people can subsidize the darker scenes by subsidizing the light to weaken the contrast.

(3) When shooting, some scenes are unavoidable because the light is too strong or too weak. Shoot first and then shoot, and you can still correct it with occlusion when zooming in.

Extended data:

Whether using one exposure or multiple exposures, it is necessary to master the accurate exposure time and choose the appropriate exposure opportunity. Under normal circumstances, the exposure time of night photography is more than one second, usually from one second to one minute. In some special cases, it will be exposed for a few minutes. When shooting, it is completely in the hands of the photographer.

If overexposed, the light itself will spread to the surrounding area for a long time, which will make the surrounding buildings or the sky produce a large area of white, increase the contrast and destroy the lighting effect of the night scene.

Under exposure, photos will also have the opposite effect. You can't tell the outline of the scene, and there is no hierarchy. In the photo, except for a little light, the rest are immersed in a dark tone. When shooting at night, if there is some afterglow in the sky (evening or dawn), you should be very careful. You should make the sky underexposed and don't let it reach its peak, otherwise you will lose the atmosphere and characteristics of the night.