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Photographic lighting process employs semi-silvered mirrors and four different grades of light
Photographic lighting process employs semi-silvered mirrors and four different grades of light
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机译:摄影照明过程使用半镀银镜面和四种不同等级的光
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摘要
A photographic process makes use of the parallel effects of light presented in series using semi-silvered mirrors and four different grades of light, clear (1), slight black tone, (2) medium black tone (3) and dark black tone (4).
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