What are the precautions for exposure in photography?

First, the aperture mainly affects the amount of light entering and the depth of field.

The larger the aperture, the more light per unit time, the smaller the aperture value and the greater the depth of field (blurred background); The smaller the aperture, the less the amount of light per unit time, and the greater the aperture value and depth of field (clarity). Example: f/3.5 and f/8.0 when other factors are the same. F/3.5 is a large aperture, and the photo will have a blurred background; F/8.0 is a small aperture with a clear background.

Second, the shutter affects the amount of light entering and the dynamic and static effects.

The lower the shutter speed, the longer the exposure time and the more light entering; On the other hand, the higher the speed, the less light enters, and the lower the shutter, the moving object will be blurred; Moving objects with high speed and clarity.

The shutter speed is in seconds, which represents the exposure time. For example, 1/60s, 1/90s,1sec,1sec. Generally, shooting motion trajectories requires a low shutter (20s- 10s) and a tripod to stabilize shooting and imaging.

Thirdly, ISO is the sensitivity of the camera to light.

Simply put, the lower the ISO value, the less sensitive it is to light. The higher the ISO value, the more sensitive it is to light.

When other conditions remain unchanged, if the ISO value changes, the picture will become brighter with the change of high ISO. But the problem with high brightness is that there will be noise in the picture. Generally, in the case of insufficient light, in order to capture the picture, high-quality ISO shooting will be sacrificed.

In our daily shooting, in M mode, the exposure value is usually determined by the shutter and aperture, and the ISO fixed selection is adaptive or minimum. If the combination of the first two can't reach the appropriate exposure, then improve the ISO.

What are the precautions for exposure in photography? Global Ivy Bian Xiao will share it with you for the time being. If you have a strong interest in the later stage of film and television, I hope this article can help you If you want to know more about camera skills, post-editing methods and materials, you can click on other articles on this site to learn.