Category: 3rd Party Software
Link: Adobe Proposes New Universal Photo Format
Posted on MacBytes.com
Approved by Mudbug
mrsebastian said:wasn't adobe getting sued by the owners of "jpeg" or something?! yes it's a good idea anyway, but sounds to me like they are trying to get away from dealing with "jpeg" issues.
JLS said:Other way round... the jpeg group tried to sue Adobe.
bousozoku said:I'm not sure that I want to be locked into any Adobe-specific technologies, free or not.
The Digital Negative Specification has been posted to Adobe's Web site free of any legal restrictions or royalties, enabling integration of the DNG file format into digital cameras, printers, and software products.
bousozoku said:Yes, I read that (three times now) and it still doesn't make me any more comfortable. I don't trust Adobe all that much.
emw said:Yeah, Adobe is the Microsoft of the creative industry, except that I have at least slightly more confidence in their decision-making ability. They also have worked well with industry groups in the past.
This is not to say that all of this isn't financially motivated by them - right now they have to write filters for every raw format they want to bring into Photoshop, and I'm sure they'll make money off of something eventually (although it won't be like Acrobat).
gwangung said:True, but that's not a problem for the rest of us...having to deal with multple formats is something all of us has to wrestle with, so solving that problem helps all of us, not just Adobe.
Presumably, this means it is a lossless codec. Otherwise it's useless to replace raw formats.techgeek said:I think some people are missing the point of this new format.
It isn't intended to replace jpg. It's aimed at replacing camera RAW formats.
But my comment still applies - why not use PNG. This is already an open standard that supports both lossless and lossy encodings. It supports everything that Adobe's press release claims as DNG's advantage, except that Adobe isn't in charge of it.techgeek said:Currently each manufacturer has ther own raw format. That is how the image is stored straight off the sensor with minimal manipulation.
Adobe produce filters to allow photoshop to read these raw formats.
Now isn't it easier for Adobe to put out a standerd and get the camera manufacturers to use that rather than messing about with all these filters to do the same job?
Sure. But I'd rather future-proof my documents with an open standard (like PNG) instead of an Adobe-proprietary standard. Even with free distribution of the standard, Adobe still owns it.techgeek said:It also means images stored in this format would hopefully have a longer shelf life. The last thing you want is your raw images to be unreadable by any software in a couple of years time
Ignore my previous post. I finally got around to reading the spec more closely.shamino said:But my comment still applies - why not use PNG.
shamino said:Ignore my previous post. I finally got around to reading the spec more closely.
This format appears to be very different from all other image file formats (even lossless ones). If I read the spec correctly, it stores a camera's red/green/blue sub-pixels separately and does not combine them into whole pixels (which JPG, PNG, TIFF and most other formats use). So the data more accurately reflects the layout of a camera's CCD element.
I still think they could get this feature via an extension to PNG or TIFF without needing to create a whole new format. They probably decided that it's easier to just release something and say "my way or the highway" than to submit drafts to a standards body to add a feature to an existing spec.
These, like JPG, MOV, WMA/WMV, and most other modern formats are "container" formats. A file can contain data encoded with a wide variety of different codecs, and sometimes (in the case of TIFF) multiple encodings in a single file.emw said:As for making an extension to PNG or TIFF - don't know why that would be any better - I don't know that those formats adequately address the needs handled by the RAW format.