KS B 5409-2023
Methods for the measurement of the effective aperture, F-number and relative aperture of photographic lenses

Standard No.

KS B 5409-2023

Release Date

2023

Published By

KR-KS

Latest

KS B 5409-2023

KS B 5409-2023 history

• 2023 KS B 5409-2023 Methods for the measurement of the effective aperture, F-number and relative aperture of photographic lenses
• 0000 KS B 5409-2013(2018)
• 2013 KS B 5409-2013 Photographic lenses ? Methods for the measurement of the effective aperture, F-number and relative aperture
• 1998 KS B 5409-1998 Photographic lenses-Methods for the measurement of the effective aperture, F-number and relative aperture
• 1982 KS B 5409-1982 Photographic lenses ? Methods for the measurement of the effective aperture, F-number and relative aperture