HG/T 2911-1997
Photography-Source document microfilms-Determination of ISO speed and ISO average gradient (English Version)

Standard No.

HG/T 2911-1997

Language

Chinese, Available in English version

Release Date

1997

Published By

Professional Standard - Chemical Industry

Latest

HG/T 2911-1997

Replace

HG/T 2173-1991

HG/T 2911-1997 history

• 1997 HG/T 2911-1997 Photography-Source document microfilms-Determination of ISO speed and ISO average gradient
• 0000 HG/T 2173-1991