If the same lens is used on both full-frame and cropped formats, and the subject distance is adjusted to have the same "field" of view (i.e., the same framing of the subject) in each format, depth of field (DoF) is in inverse proportion to the format sizes, so for the same "f"-number, the full-frame format will have less DoF. Equivalently, for the same DoF, the full-frame format will require a larger "f"-number (that is, a smaller aperture diameter). This relationship is approximate and holds for moderate subject distances, breaking down as the distance with the smaller format approaches the hyperfocal distance, and as the magnification with the larger format approaches the macro range.