Traditional Culture Encyclopedia - Photography and portraiture - What exactly does "white plus black minus" mean in photography?
What exactly does "white plus black minus" mean in photography?
For example, when shooting a white snow scene, the camera will automatically think that it is overexposed, and it is necessary to artificially increase the exposure compensation, that is, white plus.
For another example, if you go into a coal mine to shoot, the camera will automatically think that the light is too dim. At this time, it is necessary to artificially reduce the exposure compensation, which is black reduction.
Extended data
White plus black minus is related to the metering mode of the camera. Camera photometry has a "18% gray principle", and exposure will be controlled based on 18% gray.
18% gray scale can show most of the scenes in our eyes, and the camera can get basically correct exposure results as the exposure basis in most cases. However, in some special cases, 18% gray source will lead to deviation of exposure results.
Exposure compensation is not only a technology, but also an art. The brightness of a work is actually an expression of feelings, and the tone of the work can be expressed through exposure compensation.
Baidu encyclopedia-white plus black minus
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