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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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ISO 2720:1974

ISO 2720:1974 Photography – General purpose photographic exposure meters (photoelectric type) – Guide to product specification

CDN $129.00

SKU: ed2f570961fe Category:

Description

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.

Edition

1

Published Date

1974-08-01

Status

PUBLISHED

Pages

7

Language Detail Icon

English

Format Secure Icon

Secure PDF

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.

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