Film grain or granularity is the random optical texture of processed photographic film due to the presence of small particles of a metallic silver, or dye clouds, developed from silver halide that have received enough photons. While film grain is a function of such particles (or dye clouds) it is not the same thing as such. It is an optical effect, the magnitude of which (amount of grain) depends on both the film stock and the definition at which it is observed. It can be objectionably noticeable in an over-enlarged photographic film photograph.
Other articles related to "film, grain, film grain, film grains":
... Tears on the print, curling of the film base due to intense light exposure, temperature, humidity etc ... degree of physical and chemical damage of film influences the motivation to preserve ... The business perspective states that once a film is no longer ‘commercially’ viable it stops generating profit and becomes a financial liability ...
... Image noise / grain Noise in a digital camera's image is remarkably similar to film grain in a film camera ... At high ISO levels (film speed) the grain/noise becomes more apparent in the final image ... Although film ISO levels can be lower than digital ISO levels (25 and 50 respectively), digital settings can be changed quickly according to requirements, while film must be physically replaced and protected from ...
... The grain of photographic film is a signal-dependent noise, with similar statistical distribution to shot noise ... If film grains are uniformly distributed (equal number per area), and if each grain has an equal and independent probability of developing to a dark ... Film grain is usually regarded as a nearly isotropic (non-oriented) noise source ...
... Film grain overlay, sometimes referred to as "FGO," is a process in which film emulsion characteristics are overlaid using different levels of opacity onto a digital file ... This process adds film noise characteristics, and in instances with moving images, subtle flicker to the more sterile looking digital medium ... As opposed to computer plug-ins, FGO is typically derived from actual film grain samples taken from film, shot against a gray card ...
Famous quotes containing the words grain and/or film:
“He showed me that the lines of a good helve
Were native to the grain before the knife
Expressed them, and its curves were no false curves
Put on it from without.”
—Robert Frost (18741963)
“His education lay like a film of white oil on the black lake of his barbarian consciousness. For this reason, the things he said were hardly interesting at all. Only what he was.”
—D.H. (David Herbert)