GB/T 7242-1987
Replaced
GB/T 13987-2025
Active
National standards
GB/T 13987-2025 Determination of flash guide numbers for electronic photoflash equipment
GB/T 13987-2025 Determination of flash guide numbers for electronic photoflash equipment
Basic Information
Standard Code:
GB/T 13987-2025
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Cameras and photographic equipment
ICS Name:
Photographic equipment, projectors
Publish Date:
2025-08-29
Implement Date:
2026-03-01
Publisher:
国家市场监督管理总局、国家标准化管理委员会
Technical Committee:
全国照相机械标准化技术委员会(SAC/TC 107)
Pages:
16 pages
Scope
本文件界定了电子闪光装置闪光指数的术语和定义,确定了闪光指数的计算公式和表示方法。
本文件不包含在ISO 2827中界定的电子闪光装置光输出的定义和描述的测量方法。
本文件适用于照相用电子闪光装置闪光指数的测量。
Development Information
Drafting Units:
杭州照相机械研究所有限公司、杭州国照检测技术有限公司、常州美图摄影器材有限公司、达测科技(广州)股份有限公司、深圳市秋雨电子科技有限公司
Drafting Persons:
胡晓颖、王微、胡丽华、王均、黄一钊、闻忠、江秋雄
Replace the following standards
Adopt standards
ISO 1230:2007
Related Standards
GB/T 9048-1988
Abolished
GB/T 9048-1988 Image area produced by 65mm and 70mm motion-picture camera aperture and maximum projectable image area on 70mm motion-picture prints—Positions and dimensions
GB/T 13157-1991
Active
GB/T 13157-1991 Overall electro-acoustic frequency response for reproduction of 35mm optical sound track—Reproduction characteristics
GB/T 13964-1992
Replaced
GB/T 13964-1992 Photographic machinery—Vocabulary
GB/T 13985-1992
Replaced
GB/T 13985-1992 Operating force and strength of camera
GB/T 13986-1992
Abolished