number aperture
81Pillar box — A pillar box is a free standing post box, in the United Kingdom, where mail is deposited to be collected by the Royal Mail and forwarded to the addressee. Similar designs exist as historical artefacts in certain Commonwealth of Nations countries …
82History of astronomical interferometry — See also: astronomical interferometerWilliam Herschel knew as early as 1779 (Herschel 1805) that stars appeared much larger in telescopes than they really were but he did not know why. When Thomas Young demonstrated interference and the wave… …
83Canon EF lens mount — The EF lens mount allows all the Canon EF lenses to be used on any of the Canon EOS line of cameras made by Canon Inc.Unlike the EF s breech lock predecessor, the FD mount, the EF mount uses a bayonet style mount. EF stands for Electro Focus :… …
84Hyperfocal distance — In optics and photography, hyperfocal distance is a distance beyond which all objects can be brought into an acceptable focus. There are two commonly used definitions of hyperfocal distance , leading to values that differ only slightly:The first… …
85Nikon FG — Type Single lens reflex Film format 35mm Film size 36mm x 24mm Lens interchangeab …
86Shutter (photography) — The 1911 Cyclopedia of Photography divides shutters into roller blind and diaphragm types, corresponding roughly to the modern focal plane and leaf types. In photography, a shutter is a device that allows light to pass for a determined period of… …
87APEX system — APEX stands for Additive system of Photographic EXposure, whichwas proposed in the 1960 ASA standardfor monochrome film speed, ASA PH2.5 1960,as a means of simplifying exposure computation.Exposure equationUntil the late 1960s, cameras did not… …
88Comparison of movie cameras — See list of movie cameras for a comprehensive listing of movie cameras. The following tables make a comparison of movie cameras that are in common professional usage in recent years. This list is strictly limited to film based cameras, in order… …
89photography, history of — Introduction method of recording the image of an object through the action of light, or related radiation, on a light sensitive material. The word, derived from the Greek photos (“light”) and graphein (“to draw”), was first used in the… …
90Nikon FM10 — FE10 redirects here. For the tenth Fire Emblem game, see Fire Emblem: Radiant Dawn. FM10 redirects here. For the 2010 edition of Football Manager, see Football Manager 2010. Nikon FM10 Nikon FM10 with a Zoom Nikkor 35 70 mm f/3.5 4.8 zoom lens.… …
