Judging from the photos, the aperture is too large, the depth of field is too shallow, the focus is on the body part, and the exposure is insufficient. . . You can use aperture priority mode, and increase exposure compensation for white subjects, at least 1. The result of analysis is that it is likely that the main machine is small, macro lens or long focal length lens is used, and the scene lighting is insufficient, and the maximum aperture is opened. If this is the case, it is recommended to shoot with a tripod, turn off the lens anti-shake and narrow the aperture. It is suggested to try around f/5.6-f/8, focusing on the head to make the subject completely clear, that is, within the depth of field. Of course, in order to highlight the depth of the three-dimensional sense, you can open the aperture to highlight the theme, such as people who show their eyes or bodies. .