Used, usually attributive, with reference to a way of measuring and expressing the speed of photographic emulsions devised by Scheiner, as Scheiner…
| 单词 | θ229647 |
| 释义 | society > leisure > the arts > visual arts > photography > action of taking photograph > technical factors > [adjective] > speed systems (2) Scheiner1900 Used, usually attributive, with reference to a way of measuring and expressing the speed of photographic emulsions devised by Scheiner, as Scheiner… Weston1933 attributive. Photography. Designating a system of film speeds based on exposure meters originally made by the Weston Electrical Instrument Company… |
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