A method for capturing an image using an electronic device having a camera, comprising: starting the camera in response to a first user input; displaying a first preview interface including a first preview image captured by an assistant lens; displaying (1203,1204) a second preview interface in response to a second user input for increasing a zoom ratio in the first preview interface and when the zoom ratio in the first preview interface is greater than or equal to a threshold value, the second preview interface including a first frame a second frame and a third frame, the first frame including an assistant preview image captured by the assistant lens, an image in the third frame is a part of the assistant preview image and the second frame including a second preview image captured by a telephoto lens, wherein a framing range of the assistant lens is greater than a framing range of the telephoto lens, wherein the third frame is used to display a target object that is to be shot by the telephoto lens and that is specified in the assistant preview image by a user, and the second preview interface further includes a prompt identifier to guide the user to move the electronic device so that the target object is placed in the framing range of the telephoto lens; and receiving a third input, wherein when the third input is a pinch operation in the second frame, the zoom ratio of the second preview image in the second frame decreases, and the size of the third frame also correspondingly increases; and wherein when the third input is an operation opposite to the pinch operation in the second frame, the zoom ratio of the second preview image in the second frame increases, and the size of the third frame also correspondingly decreases. starting the camera in response to a first user input; displaying a first preview interface including a first preview image captured by an assistant lens; displaying (1203,1204) a second preview interface in response to a second user input for increasing a zoom ratio in the first preview interface and when the zoom ratio in the first preview interface is greater than or equal to a threshold value, the second preview interface including a first frame a second frame and a third frame, the first frame including an assistant preview image captured by the assistant lens, an image in the third frame is a part of the assistant preview image and the second frame including a second preview image captured by a telephoto lens, wherein a framing range of the assistant lens is greater than a framing range of the telephoto lens, wherein the third frame is used to display a target object that is to be shot by the telephoto lens and that is specified in the assistant preview image by a user, and the second preview interface further includes a prompt identifier to guide the user to move the electronic device so that the target object is placed in the framing range of the telephoto lens; and receiving a third input, wherein when the third input is a pinch operation in the second frame, the zoom ratio of the second preview image in the second frame decreases, and the size of the third frame also correspondingly increases; and wherein when the third input is an operation opposite to the pinch operation in the second frame, the zoom ratio of the second preview image in the second frame increases, and the size of the third frame also correspondingly decreases.