Negative (photography)

（重定向自Photographic negative）

Color positive picture (A) and negative (B), monochrome positive picture (C) and negative (D)

In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject appear darkest and the darkest areas appear lightest. This reversed order occurs because of the extremely light-sensitive chemicals a camera film must use to capture an image quickly enough for ordinary picture-taking, which are darkened, rather than bleached, by exposure to light and subsequent photographic processing.

单词	Photographic negative
释义	Photographic negative 原声例句 Osmosis-心血管 Conventional x-rays that show white bones on a black background are like photographic negatives. 常规来说，在X线片上可以看到白色的骨头和黑色的背景，就像照片的底片一样。英语百科 Negative (photography) （重定向自Photographic negative） In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject appear darkest and the darkest areas appear lightest. This reversed order occurs because of the extremely light-sensitive chemicals a camera film must use to capture an image quickly enough for ordinary picture-taking, which are darkened, rather than bleached, by exposure to light and subsequent photographic processing.
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