Imaging device performing enlargment processing based on specified area of object image, storage medium, and method of displaying object image

A device includes a processor which controls a display operation of a display unit. The processor acquires a specified portion specified by a first user operation in an object image including an object to be imaged, sets an enlargement reference point in the object image according to the specified portion with respect to which a part of the object image is enlarged when performing enlargement display control, and extracts a display target range from the object image as the part of the object image to be enlarged. The display target range includes both the enlargement reference point and the specified portion, and the enlargement reference point is set so that the representative point approaches a middle of the display area in response to each input of a second user operation for performing enlargement display control, until the representative point coincides with the middle of the display area.