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GB/T 10072-2025: Specifications of electronic flash equipments for photograph
Status: Valid GB/T 10072: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 10072-2025 | English | 279 |
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3 days [Need to translate]
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Specifications of electronic flash equipments for photograph
| Valid |
GB/T 10072-2025
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| GB/T 10072-2003 | English | 209 |
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3 days [Need to translate]
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Specifications of electronic flash equipment for photograph
| Valid |
GB/T 10072-2003
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| GB/T 10072-1988 | English | 279 |
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3 days [Need to translate]
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Specifications of electronic flash equipments for photograph
| Obsolete |
GB/T 10072-1988
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Basic data | Standard ID | GB/T 10072-2025 (GB/T10072-2025) | | Description (Translated English) | Specifications of electronic flash equipments for photograph | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N46 | | Classification of International Standard | 37.040.10 | | Word Count Estimation | 14,132 | | Date of Issue | 2025-08-29 | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 10072-2003 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | GB/T 10072-2025: Specifications of electronic flash equipments for photograph---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT10072-2025
ICS 37.040.10
CCSN46
National Standard of the People's Republic of China
Replaces GB/T 10072-2003
Technical specifications for electronic flash devices for photographic use
Released on August 29, 2025
Implementation on March 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Abbreviations 2
5 Technical Requirements 2
6 Test Method 4
7 Inspection Rules 6
8 Marking, packaging, transportation and storage 7
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 10072-2003 “Technical requirements for electronic flash devices for photography”. Compared with GB/T 10072-2003,
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
--- Changed the technical requirements for "correlated color temperature" (see 5.10, 4.10 of the.2003 edition);
--- Changed the technical requirements for "flash durability" (see 5.11, 4.11 of the.2003 edition);
--- Deleted the relevant technical requirements and test methods for "flash leakage rate" (see 4.11.1 and 5.4.10 of the.2003 edition);
--- Added technical requirements and corresponding test methods for "impact resistance" and "drop resistance" (see 5.14, 5.15, 6.4.
14, 6.4.15).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Photographic Machinery (SAC/TC107).
This document was drafted by. Hangzhou Photographic Machinery Research Institute Co., Ltd., Hangzhou Guozhao Testing Technology Co., Ltd., Dace Technology (Guangzhou) Co., Ltd.
Co., Ltd. and Fujian Bailing Film and Television Technology Co., Ltd.
The main drafters of this document are Ren Sen, Gao Ting, Liu Yuezhan, Hu Xiaoying, Ge Shiqing, Cheng Yifan, Wang Jun, and Zhan Xiaohong.
The previous versions of this document and the documents it replaces are as follows.
--- First published as GB/T 10072-1998 in.1998, first revised in.2003;
---This is the second revision.
Technical specifications for electronic flash devices for photographic use
1 Scope
This document specifies the technical requirements for electronic flash devices for photographic use, describes the corresponding test methods, and stipulates the inspection rules, marking, packaging, etc.
Packaging, transportation and storage, etc.
This document applies to the manufacture of external electronic flash devices that provide main light or fill light for camera photography.
This document does not apply to high-power studio flash units.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 13987-2025 Determination of the guide number for electronic flash devices used in photography
JB/T 13702.1 Camera environmental testing Part 1.High and low temperature tests
JB/T 13702.2 Camera environmental testing Part 2.Vibration test
JB/T 13702.3 Environmental testing for cameras Part 3.Impact test
JB/T 13702.5 Environmental testing for cameras Part 5.Free drop test
JB/T 14302 Packaging, transportation, storage conditions and test methods for photographic machinery
3 Terms and Definitions
The terms and definitions defined in GB/T 13987-2025 and the following apply to this document.
3.1
light output
The integral of the luminous intensity of the flash device in the direction of the reflector axis over time.
Note. The unit of light output is candela second (cd·s).
3.2
Readyindication
An indication signal that the flash unit is charged to the point where it can fire a flash.
3.3
Flash index guide number; GN
NGN
Related to the ISO sensitivity of the film or digital camera used, the camera's required sensitivity to obtain the proper exposure for the film or image sensor.
The product of the lens aperture (F-number) and the distance from the flash light source to the subject.
Note. The flash guide number is a measure of the amount of light emitted by a flash, measured in meters (m).
[Source. GB/T 13987-2025, 3.1]
3.4
ready number
GN (3.3) measured when the preparatory indication (3.2) starts to be displayed.
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