ISO 26431-1:2008规定了影评室和商业影院中带有数字光引擎的投影仪放映电影时反射屏幕光的绝对亮度水平、白点色度和亮度均匀性。 ISO 26431-1:2008的目的是在投影图像中实现与母版制作过程中预期的色调比例和对比度。

ISO 26431-1:2008 specifies the absolute luminance level, white point chromaticity and luminance uniformity of the reflected screen light for the presentation of motion pictures by projectors with digital light engines in review rooms and commercial cinemas. It is the purpose of ISO 26431-1:2008 to achieve the tone scale and contrast in the projected image that will correspond to that intended during the mastering process.