A camera with a focusing function is provided. The camera includes a first imaging unit configured to generate a first image by a photoelectric conversion from an image of a subject obtained via a first lens, a second imaging unit configured to generate a second image by a photoelectric conversion from an image of the subject obtained via a second lens, where the second imaging unit being different from the first imaging unit, an focusing amount acquiring unit configured to acquire amount of focusing, a composite image generating unit configured to set a cutout position on the second image, to cut out an partial image at the cutout position, on the basis of the operation amount and a predetermined cutout rule, and to generate a composite image by superimposing the partial image on the first image, and an image display unit configured to display the composite image.