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  • ISO
    ISO 10157:1991 Photography -- Flash exposure meter -- Requirements
    Edition: 1991
    $126.25
    / user per year

Content Description

This International Standard applies to photoelectric flash exposure meters which measure the time integral of the luminance or of the illuminance of a photographic object (to be called thereafter “object”) illuminated by a source of light for a brief illumination period 1) and indicate the time integral or a number corresponding to the time integral or the f-number required for the correct exposure of a photographic film with a given speed.

Continuous light, which is available in addition to the light emitted by the flash light source, is also evaluated.

1) Within the range of gate time specified by the manufacturer for the specific meter.



About ISO

ISO, the International Organization for Standardization, brings global experts together to agree on the best way of doing things – for anything from making a product to managing a process. As one of the oldest non-governmental international organizations, ISO has enabled trade and cooperation between people and companies all over the world since 1946. The International Standards published by ISO serve to make lives easier, safer and better.
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