The ‘release candidate’ label applied to this technology indicates that the codec
includes all of the intended features and is well tested but will not be released as a finished product until the community is able to help ensure that a larger set of hardware and software configurations are used with the Codec.
Adobe DNG Codec requires Microsoft Windows 7
32-bit or 64-bit and isn't compatible with Windows Vista.
about Digital Negative (DNG):
Raw file formats are becoming extremely popular in digital photography workflows because they offer creative professionals greater creative control. However, cameras can use many different raw formats — the specifications for which are not publicly available — which means that not every raw file can be read by a variety of software applications. As a result, the use of these proprietary raw files
as a long-term archival solution
carries risk, and sharing these files across complex workflows is even more challenging.
The solution to this growing problem is Digital Negative (DNG), a publicly available archival format for the raw files generated by digital cameras. By addressing the lack of an open standard for the raw files created by individual camera models, DNG helps ensure that photographers will be able to access their files in the future. Read more here.