Digital Negative Specification - Definition and Overview

In digital photography and computers, the Digital Negative Specification (DNG) is an ostensibly royalty-free raw image file format Adobe Systems announced on September 27, 2004. The same day, Adobe introduced Digital Negative to the market with its gratis Adobe DNG Converter program. According to Adobe, Digital Negative was a response to demand for a unifying camera raw file format. Digital Negative is based on the TIFF EP format, and mandates use of metadata. Adobe Photoshop Elements 3.0 supports Digital Negative.

References

• Adobe Systems (September 27, 2004). "Adobe Unifies Raw Photo Formats with Introduction of Digital Negative Specification: Free Converter Tool Kick Starts New Digital Negative File Format by Translating Raw Formats into Easy-to-Use, Archive-Ready Files" (http://www.adobe.com/aboutadobe/pressroom/pressreleases/200409/092704DNG.html), an Adobe Systems news release
• Adobe Systems (2004). Digital Negative Specification (http://www.adobe.com/products/dng/pdfs/dng_spec.pdf) v. 1.0.0.0

Example Usage of Specification