ISO 12232:2019/Amd 1:2020

INTERNATIONAL ISO
STANDARD 12232
Third edition
2019-02
AMENDMENT 1
ISO pub-date
Photography — Digital still cameras
— Determination of exposure index,
ISO speed ratings, standard output
sensitivity, and recommended
exposure index
AMENDMENT 1: Determination of
encoding-relative sensitivity (ERS)
Photographie — Appareils de prises de vue numériques —
Détermination de l'indice d'exposition, des régimes de vitesse ISO, de
la sensibilité normale de sortie et de l'indice d'exposition recommandé
AMENDEMENT 1: Détermination de la sensibilité relative au
codage (ERS)
PROOF/ÉPREUVE
Reference number
ISO 12232:2019/Amd.1:2020(E)
©
ISO 2020

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ISO 12232:2019/Amd.1:2020(E)

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ISO 12232:2019/Amd.1:2020(E)

Foreword
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© ISO 2020 – All rights reserved PROOF/ÉPREUVE iii

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ISO 12232:2019/Amd.1:2020(E)
Photography — Digital still cameras — Determination
of exposure index, ISO speed ratings, standard output
sensitivity, and recommended exposure index
AMENDMENT 1: Determination of encoding-relative
sensitivity (ERS)


Clause 7, after the 2nd paragraph
Add the following NOTE:
"NOTE For information related to the determination of encoding-relative sensitivity (ERS), see
Annex E."

Annex E
Add the following Annex E:
© ISO 2020 – All rights reserved PROOF/ÉPREUVE 1

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ISO 12232:2019/Amd.1:2020(E)

Annex E
(informative)

Determination of encoding‐relative sensitivity (ERS)
E.1 General
E.1.1 Purpose and use cases of the ERS
The ERS recorded in an image file can be used for calibrating exposures, to provide information about
the exposures used to capture an image and to determine absolute scene luminance and colorimetry
estimates for scientific, tech
...