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Photographic apparatus
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Light measuring apparatus for photographic cameras
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Photographic camera fitted with an electric exposure meter
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Apparatus for light control
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Photographic camera built integral with an electric exposure meter
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Automatic diaphragm
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Photographic camera
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Apparatus for light control
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Exposure control for photographic apparatus
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Photographic apparatus
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Photographic camera for determining the exposures
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Diaphragm for photographic cameras
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Photographic apparatus
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Apparatus for automatically determining the exposure in photographic apparatus
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