Reference number
ISO 2720:1974
ISO 2720:1974
© ISO 2025
International Standard
ISO 2720:1974
Photography — General purpose photographic exposure meters (photoelectric type) — Guide to product specification
Edition 1
1974-08
1974-08
ISO 2720:1974
7690
Published
(Edition 1, 1974)
This publication was last reviewed and confirmed in 2021.
Therefore this version remains current.
Abstract
Specified are calibration levels and test conditions for general-purpose photoelectric exposure meters which measure reflected or incident light, or both, in determining photographic exposure for camera use. The specifications apply to exposure meters containing a light-sensitive element, and indicating electrical instrument, a directional system and a calculator to correlate the meter indications with the camera exposure settings.