For a given image format, depth of field is determined by three factors: the focal length of the lens, the f-number of the lens opening (the aperture), and the camera-to-subject distance.
【在 J********o 的大作中提到】 : For a given image format, depth of field is determined by three factors: the : focal length of the lens, the f-number of the lens opening (the aperture), : and the camera-to-subject distance.