Digital Negative - Rationale For DNG - Objectives

Objectives

These objectives are repeatedly emphasized in Adobe documents:

  • Digital image preservation (sometimes known as "archiving"): to be suitable for the purpose of preserving digital images as an authentic resource for future generations. Assessment: The US Library of Congress states that DNG is a recommended alternative to other raw image formats: "Less desirable file formats: RAW; Suggested alternatives: DNG". The Digital Photography Best Practices and Workflow (dpBestflow) project, funded by the United States Library of Congress and run by the American Society of Media Photographers (ASMP), singles out DNG, and states "DNG files have proven to be significantly more useful than the proprietary raw files in our workflow".
  • Easy and/or comprehensive exploitation by software developers: to enable software to be developed without the need for reverse engineering; and to avoid the need for frequent software upgrades and re-releases to cater for new cameras. Assessment: Software could support raw formats without DNG, by using reverse engineering and/or dcraw; DNG makes it easier, and many software products can handle, via DNG, images from cameras that they have no specific knowledge of. An unresolved restriction is that any edit/development settings stored in the DNG file by a software product are unlikely to be recognized by a product from a different company. (This problem is not specific to DNG).
  • In-camera use by camera manufacturers: to be suitable for many camera manufacturers to use as a native or optional raw image format in many cameras. Assessment: About 12 camera manufacturers have used DNG in-camera. About 38 camera models have used DNG. Raw image formats for more than 230 camera models can be converted to DNG.
  • Multi-vendor interoperability: to be suitable for workflows where different hardware and software components share raw image files and/or transmit and receive them.

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Famous quotes containing the word objectives:

    Along the journey we commonly forget its goal. Almost every vocation is chosen and entered upon as a means to a purpose but is ultimately continued as a final purpose in itself. Forgetting our objectives is the most frequent stupidity in which we indulge ourselves.
    Friedrich Nietzsche (1844–1900)