gelatin printing
91Circle of confusion — For the closely related topic in microscopy, see Point spread function. In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. It is also known as… …
92Film speed — is the measure of a photographic film s sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system. A closely related ISO system is used to measure the sensitivity of digital… …
93Color management — In digital imaging systems, color management is the controlled conversion between the color representations of various devices, such as image scanners, digital cameras, monitors, TV screens, film printers, computer printers, offset presses, and… …
94Postage stamp gum — In philately, gum is the substance applied to the back of a postage stamp to enable it to adhere to a letter or other mailed item. The term is generic, and applies both to traditional types such as gum arabic and to synthetic modern… …
95Black-and-white — This article is about the term as used in media and computing. For other uses, see Black and white (disambiguation). A black and white photo of a breadfruit c. 1870 Black and white, often abbreviated B/W or B W, is a term referring to a number of …
96Infrared photography — Top: tree photographed in the near infrared range. Bottom: same tree in the visible part of the spectrum …
97Cross processing — A cross Processed shot of mannequins Cross processing (sometimes abbreviated to Xpro) is the procedure of deliberately processing photographic film in a chemical solution intended for a different type of film. The effect was discovered… …
98Architectural reprography — covers a variety of technologies, media, and supports typically used to make multiple copies of original technical drawings and related records created by architects, landscape architects, engineers, surveyors, mapmakers and other professionals… …
99Dave Butcher — Doctor David Butcher (born in 1952 in Welwyn, Hertfordshire, United Kingdom) is a black and white photographer who uses traditional film and darkroom techniques to produce his photographs. A chemist by profession, Butcher trained as a scientist… …
100Charge-coupled device — A specially developed CCD used for ultraviolet imaging in a wire bonded package. A charge coupled device (CCD) is a device for the movement of electrical charge, usually from within the device to an area where the charge can be manipulated, for… …
