from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The duration of time for which the shutter of a camera remains open when exposing photographic film or other photosensitive material to light for the purpose of recording an image.


Sorry, no etymologies found.


  • Judging from the dimensions, the negative was exposed in a simple camera of the box type, which usually has a fixed focus (about ten feet), fixed shutter speed (about 1/25 of a second) and a simple lens of the Meniscus type.

    Space Ships of the Visitors


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