Please show your support for Adobe's development of the DNG format as a universal, open file, and for camera manufacturers including DNG as an option for shooting and storing files, by clicking this link: http://www.PetitionOnline.com/dng01/petition.html .
From the Adobe DNG site: ( http://www.adobe.com/products/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? The 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.
It is time that the major camera manufacturers, in particular, Canon and Nikon as industry leaders, acknowledge and support Adobe's initiative as an industry standard, for the good of the photographic community.