Camera module and electronic device

An electronic device comprising a housing and a camera module, wherein the camera module is disposed inside the housing and comprises a camera lens, a variable aperture, and a photosensitive element, wherein

• the camera lens comprises a plurality of lenses arranged along a direction from an object side to an image side;
• the variable aperture is located on an object side of at least one of the lenses, and a clear aperture of the variable aperture is adjustable;
• a f-number of the camera lens is F1 when the clear aperture of the variable aperture is adjusted to a first clear aperture, or a f-number of the camera lens is F2 when the clear aperture of the variable aperture is adjusted to a second clear aperture, wherein F1 and F2 meet a condition F1<F2;
• the photosensitive element is disposed on an imaging surface of the camera lens, and a surface that is of the photosensitive element and that faces the camera lens comprises a photosensitive area;
• the camera module is configurable to a first imaging mode and a second imaging mode;
• in the first imaging mode, the f-number of the camera lens is F1, and the photosensitive element is configured to:
• enable the camera lens to perform imaging in a full area of the photosensitive area, and adjust angular resolution of the full area of the photosensitive area to δ;
• and
• in the second imaging mode, the f-number of the camera lens is F2, and the photosensitive element is configured to:
• enable the camera lens to perform imaging in a partial area of the photosensitive area, and adjust the angular resolution of the partial area of the photosensitive area to nδ, wherein n is a natural number greater than 1 and less than or equal to 3.