Luminosity

The intense brightness of the picture projected by powerful light onto a coated screen in itself transforms the most mundane element of reality. The appeal of a luminous picture is attested by efforts of advertisers to achieve luminous effects in posters and displays. The luminosity of the motion-picture image also results in a considerable range of tone, between the brightest highlight and the deepest black. In both black-and-white and colour films, the most delicate gradations in the image are therefore possible.