ISO 1230:2007現行
Photography - Determination of flash guide numbers for electronic flash equipment
出版：International Organization for Standardization
專家解讀視頻
NEN ISO 1230:2007 - Identical
BS ISO 1230:2007 - Identical
BS ISO 1230:1992 - Identical
KS A ISO 1230:2013 - Identical
PN 93/N-84521:1993 - Identical
BS 5841-6:1980 - Identical
ANSI PH3.405-1991 - Identical
NAPM IT3.405:1996 - Identical
