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Photography RAW or DNG, What's the big difference?
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CompMac
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 Sep 20 2007, 11:20 PM
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DNG is a format created by Adobe as the de facto general standard for RAW formatted files.
It is created to get rid of proprietary RAW formats by different manufacturers. Imagine the scenario of a camera manufacturer going bust, or suddenly wanted to change their format and don't support the old format anymore, what will you do with all the RAW files that you have captured?
There is no difference in quality with respect to other RAW formats once converted. I think the current best way is to keep both types as digital negatives, one of the camera manufacturer and the other in DNG.
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CompMac
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Sep 21 2007, 10:30 PM
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QUOTE(CocoMonGo @ Sep 21 2007, 09:58 PM) While the DNG format is free for anyone to download the spec and implement it in their program or camera, the format is still owned by Adobe. The reason i think why DNG is still not "de facto" for RAW files is that there is the possibility of Adobe suddenly deciding that it is only fair to charge a royalty fee for using DNG format in programs or camera. DNG is royalty-free. Quoted from Adobe website. QUOTE Grant of Rights
Subject to the terms below and solely to permit the reading and writing of image files that comply with the DNG Specification, Adobe hereby grants all individuals and organizations the worldwide, royalty-free, non-transferable, non-exclusive right under all Essential Claims to make, have made, use, sell, import and distribute Compliant Implementations. |
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CompMac
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Sep 22 2007, 10:44 AM
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QUOTE(CocoMonGo @ Sep 22 2007, 09:07 AM) Yes it is free for now no denying that. But what is stopping them from charging users in the future when the format is widely accepted? Remember they still own the rights to DNG, it is not in the public domain. Few years ago the same thing almost occurred with the JPEG/JPG format. The license owners demanded for royalties for using that format from major companies and even hinted on charging anyone who uses JPEG algorithms. This is what I mean. JPEG Patent Holder Suesand this No more JPEGThis maybe stale news but it proves the point. Adobe's DNG is analogous to PNG with respect to JPG/JPEG. They do own the patent to DNG but if you read the Grant of Rights carefully, it is open to everyone in the world to use (read and write) it royalty-free meaning they won't charge anything. If they ever do charge, it will be a breach of this license statement. |
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