Main Page | See live article | Alphabetical index In photography, a printer point is a unit of relative exposure equal to a fraction of a stop. This numbering scheme is used in photographic printing and photographic filters. To interpret printer points, it is first necessary to know what fraction of a stop corresponds to a printer point. Different groups of people use different numbers of printer points to a stop: common figures include 3, 7, 12, and 13. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.