GB/T 43043-2023 English PDF

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GB/T 43043-2023: Digital cameras - Measuring low-light performance
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Basic data

Standard ID: GB/T 43043-2023 (GB/T43043-2023)
Description (Translated English): Digital cameras - Measuring low-light performance
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N46
Classification of International Standard: 37.040.10
Word Count Estimation: 22,264
Date of Issue: 2023-09-07
Date of Implementation: 2024-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 43043-2023: Digital cameras - Measuring low-light performance

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 37.040.10 CCSN46 National Standards of People's Republic of China Measurement of low light performance of digital cameras (ISO 19093.2018,Photography-Digitalcameras- Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Table of contents

Preface III 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Test conditions and settings 2 4.1 Test chart 2 4.2 Camera settings 3 4.3 Take a reference image 4 4.4 Shooting of test images 5 5 Camera performance under the influence of low light5 5.1 Exposure time 5 5.2 Exposure level 5 5.3 Noise (points) 5 5.4 Texture (low contrast fine details) 6 5.5 chroma reduction 6 6 Results Report 7 Appendix A (Informative) Example 9 of generating a single performance value based on measurement results A.1 Overview 9 A.2 Exposure time 9 A.3 Exposure level 9 A.4 Noise (points) 9 A.5 Texture 9 A.6 chroma reduction 9 Appendix B (normative) test chart 11 B.1 Test image size and background11 B.2 Mandatory features11 B.3 Optional features 16 Reference 17

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is equivalent to ISO 19093.2018 "Measurement of Low-Light Performance of Photographic Digital Cameras". This document has made the following minimal editorial changes. ---Change the name of the standard to "Measurement of Low Light Performance of Digital Cameras"; ---Incorporates the contents of the amendment ISO 19093.2018/Amd.1.2020. Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Photographic Equipment Standardization Technical Committee (SAC/TC107). This document was drafted by. Zhejiang University of Communication, Hangzhou Photographic Mechanical Research Institute Co., Ltd., Xiamen Panasonic Electronic Information Co., Ltd., Hangzhou Guozhao Inspection Technology Co., Ltd., Guangdong Futubao Imaging Industry Co., Ltd., Sichuan Xinshi Chuangwei Ultra HD Technology Co., Ltd. The main drafters of this document. Zhang Wen, Liu Yajing, Ge Shiqing, Shi Min, Jiang Yanbing, Xu Yuzhao, Li Zhihua, and Song Xiaomin. Measurement of low light performance of digital cameras

1 Scope

This document describes a method of measuring the low-light performance of digital cameras. This document is suitable for low-light performance measurement of digital cameras, mobile phones with camera functions and other mobile devices that can take pictures.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. ISO 7589 Specification for light sources daylight, incandescent lamps and printers for photographic photosensitivity measurements (Photography-Iluminantsfor Note. GB/T 15061-1994 General principles for photosensitivity measurement of silver salt photosensitive materials Part 1.Sample exposure strip suitable for incandescent tungsten light and simulated sunlight exposure Parts (ISO 7589.1984,NEQ) ISO 14524 Method of measurement of optical-to-electrical conversion functions (OECFs) of photographic digital still cameras [Photography- Elec- Note. GB/T 19894-2005 Measurement method of optical-electrical conversion functions (OECFs) of digital cameras (ISO 14524.1999, IDT) ISO 15739 Measurement of noise (points) in photographic digital still images (Photography-Electronicstil-pictureima- ging-Noisemeasurements) Note. GB/T 34074-2017 Measurement of noise in digital cameras (ISO 15739.2013, IDT) ISO /T S19567-1 Texture reproduction measurement on photographic digital cameras Part 1.Frequency characteristic measurement using loop mode IEC 61966-2-1 Color measurement and management in multimedia systems and equipment Part 2-1.Color management Default RGB color empty ourmanagement-DefaultRGB colourspace-sRGB)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Use the longest exposure time for a sharper image when shooting handheld. Note 1.The exposure time (s) is 1/f, and the f value is the focal length value of the equivalent lens of the 35mm sensor. Note 2.If the camera has an image stabilization structure, handheld shooting with exposure times longer than 1/fs can still produce reasonably sharp images. 3.2 The focal length of the lens attached to a camera with a sensor size of 24mm x 36mm (derived from 35mm film) is equivalent to the focal length of the lens attached. Connected to the focal length of a 35mm film camera. ......

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