Digital Negative

Digital Negative (DNG) is an open lossless raw image format written by Adobe used for digital photography. It was launched on September 27, 2004. The launch was accompanied by the first version of the DNG specification, plus various products, including a free-of-charge DNG converter utility. All Adobe photo manipulation software (such as Adobe Photoshop and Adobe Lightroom) released since the launch supports DNG.

DNG is based on the TIFF/EP standard format, and mandates significant use of metadata. Exploitation of the file format is royalty-free; Adobe has published a license allowing anyone to exploit DNG, and has also stated that there are no known intellectual property encumbrances or license requirements for DNG. Adobe stated that if there was a consensus that DNG should be controlled by a standards body, they were open to the idea. Adobe has submitted DNG to ISO for incorporation into their revision of TIFF/EP.

Read more about Digital Negative:  Rationale For DNG, Technical Summary, Timeline, Reception, DNG Conversion, Versions of The Specification, Standardization

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