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Anti-halation backing : ウィキペディア英語版 | Anti-halation backing
An anti-halation backing is a layer found in most photographic films. It is usually a coating on the back of the film base, but sometimes it is incorporated between the light-sensitive emulsion and the base. The light that passes through the emulsion is absorbed by the anti-halation layer. This prevents any light from being reflected back through the emulsion from the rear surface of the base, or from anything behind the film, and causing a halo-like effect around bright points or edges in the image. The anti-halation layer is rendered transparent or washed out (as in K-14 films) during processing of the film. The lack of an anti-halation layer in Kodak's High Speed Infrared film (HIE) (HIE) is the cause of the ethereal "glowing" effect often associated with infrared photography,〔http://photonotes.org/cgi-bin/photo-entry.pl?id=Antihalationlayer〕 rather than an artifact of IR itself. == References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Anti-halation backing」の詳細全文を読む
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