Let's talk about the reason first: the main reason is that the background LED screen is too bright and the surface light is not enough. The automatic aperture of the camera is exposed by the brightness of the background LED screen, which leads to underexposure of the face.

In addition to solutions, please choose as appropriate:

1. The selfie mode remains unchanged. It is required to increase the brightness of surface lighting or increase the number of surface lighting, or provide spotlights. The brightness of surface illumination is required to exceed that of background LED screen. The advantage is to solve the problem perfectly, but the disadvantage is that the expenses borne by newcomers increase and it is not difficult.

2, the lighting is unchanged, the camera is changed to manual aperture, and the face is the exposure standard. The advantage is that there is no need for newcomers to increase the lighting cost, and the disadvantage is that the background LED will be overexposed or even dead white.

3. Adjust the PP value of the camera, set the inflection point and slope, and increase the exposure tolerance. The advantages are the same as those in Article 2. The disadvantage is that the adjustment of PP value requires certain technology, and the price of improving exposure latitude is to reduce the contrast and increase the gray level of the picture, which needs to be readjusted in the later color correction.