KS B 5409-2013
Photographic lenses ? Methods for the measurement of the effective aperture, F-number and relative aperture

Standard No.

KS B 5409-2013

Release Date

2013

Published By

Korean Agency for Technology and Standards (KATS)

Status

Be replaced

Replace By

KS B 5409-2013(2018)

Latest

KS B 5409-2023

Replace

KS B 5409-1998

Scope

This standard specifies methods for measuring the effective aperture, F number, and aperture ratio of photographic lenses.

KS B 5409-2013 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