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汉语拼音：fù piàn

俗称底片。摄影用 的黑白或彩色感光片，经曝光、显影、定影后所成的与原景物明暗相反或颜色互补的片子。用于印放照 片或影片。

1. 照相的底片。因底片上的图像跟实际图像的明暗刚好相反，故称。

   《科学画报》1983年第3期：“照相技术在很长一个时期内都是先在负片上成像，然后洗印成正片。”

• Many glass negatives were thought to be worthless. The emulsion was washed off, and many were used to build greenhouses.

  很多玻璃负片都被认为没有价值，感光乳剂都被冲刷掉，人们用这些玻璃片盖温室去了。

• Goldenrod paper: Opaque orange paper on which film negative is assembled for plate -making.

  黄花纸：橙色不透明、拼负片大版用的基纸。

• Centre mark A short line added to copy, a page negative , or a flat , to denote the centre of a page or form ; also as a registration mark .

  中间记号加在原稿上或负片版上或大版上的短线，用来表示一版或格式的中央；亦作套正用。

• Positive films will become negatives after cross processing, while negatives will become positives after cross processing.

  反冲的正片会变为负片，而反冲的负片则会变为正片。

• This works with slide film and digital. But with negative film, especially color negative, you're better off overexposing by one stop.

  这一建议适用于反转和数码相机。而对负片，特别是彩色负片，最好增曝一档。

• Fogged negatives or insufficient density in positives, particularly in the highlights or in fine printing detail, may cause this problem.

  不清洁的负片或浓度不足的正片容易在较精细印刷的亮部处发生这种现象。

• Place one of the negative records in the projector object plane.

  将负片记录之一放入投影器的物平面内。

• But the process was cheaper involving a weakly developed negative being placed on back card or paper to appear as a positive.

  这种方法廉价些，因其把微弱曝光的负片放在背板或背纸上作整片。

• The main types are black &white, colour positive (slide film) and colour reversal (or negative).

  最主要的几个分类是黑白卷、彩色正片和彩色反转片（负片）。