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| sharp cut-off filter (steiler Absorptionskante); sharp-cutting filter (steiler Absorptionskante, filter having an abrupt division between the regions of high and low transmission) | |||
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| sharp cut-off filter (steiler Absorptionskante); sharp-cutting filter (steiler Absorptionskante, filter having an abrupt division between the regions of high and low transmission) | |||
