Abstract: Embodiments of this application disclose a focusing method and an electronic device, including: In response to a first operation, an electronic device starts photographing, and displays a first interface. The electronic device displays a Kth frame of preview image in the first interface at a first moment. The Kth frame of preview image is collected by the camera by using a face of a first target as a first focusing frame, and the face of the first target meets a preset facial recognition condition in the Kth frame of preview image. The electronic device displays an Mth frame of preview image in the first interface at a second moment. The Mth frame of preview image is obtained by the camera by focusing on the first focusing frame, the face of the first target does not meet the preset facial recognition condition in the Mth frame of preview image.

Abstract: A display method includes detecting a first operation performed by a user to adjust an angle of view; determining a first angle of view in response to the detected first operation; obtaining a first luminance value of a camera lens at the first angle of view based on the first angle of view; obtaining a second luminance value of the camera lens at a preset second angle of view; fusing the first luminance value and the second luminance value; to obtain a fused luminance value; and displaying a preview image obtained by the camera lens at the first angle of view, where the preview image has the fused luminance value.

Abstract: This application discloses a photographing method and a related apparatus. The method includes the following steps: An electronic device detects a motion status of a photographed subject; if the photographed subject is moving relative to the electronic device, the electronic device determines whether an artificial light source is present in a current photographing environment; and if an artificial light source is present in the current photographing environment, the electronic device determines a frame interval based on a flicker frequency of the artificial light source, and may also reduce an exposure time by a step size B.

Abstract: This application provides a photographing method from a plurality of artificial light sources and a related apparatus. An electronic device may determine flicker frequencies of the plurality of artificial light sources, and select two of the flicker frequencies, denoted as F1 and F2. Flicker periods corresponding to F1 and F2 are denoted as T1 and T2, respectively. Based on these two flicker periods (T1 and T2), the electronic device determines the exposure time and frame interval to be used for the next image acquisition by the electronic device. The method can eliminate a banding phenomenon caused by a single artificial light source and attenuate a banding phenomenon caused by other artificial light sources, avoiding scrolling bright and dark streaks in images on the electronic device.