Traditional Culture Encyclopedia - Photography and portraiture - Common photography books introduce shooting methods. Why is there exposure compensation when indicating manual aperture and speed? What's the point?

Common photography books introduce shooting methods. Why is there exposure compensation when indicating manual aperture and speed? What's the point?

When the aperture and speed are fixed, the exposure compensation is added to preprocess the subject.

For example, sometimes when taking portraits, we will add some exposure after the face is measured to make the face skin whiter.

When the sky is measured, it will also reduce the exposure and make the sky appear bluer.

In addition, when shooting with film, corresponding compensation will be made. The exposure of reversal film will increase by 1/3, and the exposure of negative film will decrease slightly. This is because reversal films and negative films have different tolerance to light.