One of ISO's oldest Standards has once again been fully updated with the latest technological innovations and market requirements. Photography and graphic technology – Density measurements ISO 5:2009 is the latest edition of one of the many original ISO Standards, which, more than 30 years after publication, are still having an impact today.
ISO 5 was the fifth Standard to be developed by ISO and is one of the oldest still actively updated and maintained. All ISO Standards are periodically reviewed no later than 3 years after publication, and then every 5 years. Voting among ISO members decides whether an international Standard will be confirmed, revised, or withdrawn. This ensures that all active ISO Standards are on par with technology and market needs.
ISO 5 is a well known multi-part Standard referenced in technical specifications for photography, graphic arts, paint, paper, image permanence, and radiography among others.
'To meet the industry's latest trends, this revision enables the use of modern spectrally based instruments, while preserving the validity of traditional filter based instruments for measuring density,' says David McDowell, Convenor of the working group. 'At the same time, it ensures compatibility of results using both types of instruments.'
ISO 5 consists of four parts.
- Part 1: Geometry and functional notation
- Part 2: Geometric conditions for transmittance density
- Part 3: Spectral conditions
- Part 4: Geometric conditions for reflection density
For the first time, all four parts were revised together to achieve a new level of consistency in terminology and requirements.
The review was carried out by many of the same experts working on two other key photography/graphic technology Standards.
- ISO 3664:2009 Graphic technology and photography – Viewing conditions
- ISO 13655 Graphic technology – Spectral measurement and colorimetric computation for graphic arts images (latest update soon to be published)
ISO 5, ISO 3664, and ISO 13655 form the basis for viewing, metrology, colour management, and process control within the graphic technology and photographic industries.