What effect does exposure compensation have on the camera?

When the shooting environment is dark and it is necessary to increase the brightness, and the flash can't work, exposure compensation can be carried out to increase the exposure appropriately. When making exposure compensation, if the photo is too dark, the EV value should be increased. Every time the EV value increases, it is 1.0, which is equivalent to doubling the light input. If the photo is too bright, the EV value should be reduced. Every time the EV value is reduced, it is equivalent to doubling the amount of light entering. According to different cameras, the compensation interval can be adjusted in units of 1/2(0.5) or 1/3(0.3). When the photographed white object looks gray or not white enough in the photo, it is necessary to increase the exposure, which simply means "the whiter the more". This seems to run counter to the basic principles and habits of exposure, but it is not. This is because the camera's photometry often focuses on the central subject, and the white subject will make the camera mistakenly think that the environment is very bright, resulting in underexposure, which is also a common problem that most beginners are prone to make. Because the shutter time or aperture size of the camera is limited, it is impossible to reach the adjustment range of 2EV all the time, so exposure compensation is not omnipotent, and it is still possible to underexpose in too dark environment. At this time, it is necessary to consider matching the flash or increasing the ISO sensitivity of the camera to improve the brightness of the picture. How to apply exposure compensation? Generally speaking, in a white environment, the photometry is low and needs to be increased, and vice versa. A. When the shooting environment is dark and the brightness needs to be increased, the exposure can be compensated and appropriately increased when the flash cannot work. B. When the photographed white object looks gray or not white enough in the photo, the exposure should be increased. Simply put, the whiter the more, which seems to run counter to the basic principles and habits of exposure. Actually, it is not. This is because the camera's photometry often focuses on the central subject, and the white subject will make the camera mistakenly think that the environment is very bright, so it is underexposed, which is also a common problem that most beginners are prone to make. C, when you shoot in front of a bright background, such as in front of a sunny window, in front of a backlit scenery, etc. , increase exposure or use a flash. D. When there is a beach, snow, sunny day or white background in front of you, increase the exposure and use the flash, otherwise the subject will be very dark. E. When shooting a snow scene, the reflection of the snow on the background light is particularly strong, and the photometric deviation of the camera is particularly large. Increase the exposure at this time, or the snow will turn gray. F, shooting black objects, when you look at the color change and gray in the photo, you should reduce the exposure to make the black more pure. G, when shooting in front of a black background, it is also necessary to reduce the exposure to avoid overexposure of the subject. (You need to increase exposure compensation to get enough exposure for night shooting) H. For night shooting, you need to turn off the flash, improve the exposure value and extend the exposure time of the camera to get gorgeous effects, which is especially important for automatic digital cameras without manual adjustment mode. Many people who use digital cameras feel that their night shooting ability is very poor. In fact, one of the important reasons is that they didn't use the camera exposure method correctly. First, when it is cloudy and foggy, the environment is still bright, but the actual object illumination is obviously insufficient. Without exposure compensation, the photo may be dim. Appropriate exposure compensation, plus 0.3 to 0.7, can make the brightness of the scene more natural. J. In some artistic photography, such as taking high-profile photos, it is necessary to increase exposure compensation to form photos with great contrast and better express the author's shooting intention. Similarly, in some cases, if it is necessary to deliberately reduce the brightness of photos, the exposure compensation should also be reduced. Being good at applying and reasonably using exposure compensation can greatly improve the success rate of your photographic works, and take photos with clear pictures, appropriate brightness and comfortable viewing, thus improving the shooting quality.