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ISO 1230:2007
M00006988
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ISO 1230:2007 Photography - Determination of flash guide numbers for electronic flash equipment
standard by International Organization for Standardization, 09/01/2007
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Full Description
ISO 1230:2007 specifies the definition and determination of the ISO guide number of electronic flash equipment. It does not specify the definitions and measuring methods for the light output of electronic flash equipment, which are specified in ISO 2827.