On an international level the German DIN 4512 system has been effectively superseded in the 1980s by ISO 6:1974, ISO 2240:1982, and ISO 5800:1979 where the same sensitivity is written in linear and logarithmic form as "ISO 100/21°" (now again with degree symbol). These ISO standards were subsequently adopted by DIN as well. Finally, the latest DIN 4512 revisions were replaced by corresponding ISO standards, DIN 4512-1:1993-05 by DIN ISO 6:1996-02 in September 2000, DIN 4512-4:1985-08 by DIN ISO 2240:1998-06 and DIN 4512-5:1990-11 by DIN ISO 5800:1998-06 both in July 2002.
On an international level the German DIN 4512 system has been effectively superseded in the 1980s by ISO 6:1974 , ISO 2240:1982 , and ISO 5800:1979 where the same sensitivity is written in linear and logarithmic form as " ISO 100/21 ° " ( now again with degree symbol ) . These ISO standards were subsequently adopted by DIN as well . Finally , the latest DIN 4512 revisions were replaced by corresponding ISO standards , DIN 4512 - 1:1993 - 05 by DIN ISO 6:1996 - 02 in September 2000 , DIN 4512 - 4:1985 - 08 by DIN ISO 2240:1998 - 06 and DIN 4512 - 5:1990 - 11 by DIN ISO 5800:1998 - 06 both in July 2002 .
When were the ISO standards first adopted?
When were the ISO standards first adopted ?
in the 1980s
in the 1980s