The background screen is too bright when shooting the lecturer, and the lecturer image becomes dark. Why?

The photos taken by the camera are relatively dark, indicating insufficient exposure. Increasing exposure can brighten the photo. The specific method is as follows:

1, turn on the flash (forced flash) to fill the light;

2. Prolonging the exposure time, night photography is particularly effective, but the lower shutter speed is easy to shake and needs tripod cooperation;

3. Choose a larger aperture to increase the luminous flux.

4. Adjust the AV+/- (exposure compensation) on the camera and adjust the value forward. The camera will increase exposure on the basis of automatic metering.

5. Set a higher sensitivity, that is, the ISO value, but a higher sensitivity will reduce the image quality and produce particles and noise.

6. In the later stage, increase the brightness on the later stage software such as PS and Meitu Xiu Xiu.

The above methods can be used separately or simultaneously.