bclaytonphoto opened this issue on Dec 09, 2007 ยท 9 posts
bclaytonphoto posted Sun, 09 December 2007 at 8:39 PM
There are some issues with the DNG format according this page
[http://www.openraw.org/node/1482
](http://www.openraw.org/node/1482)"DNG is not an open standard in that it does not document all the essential information contained in current RAW format files"
DNG
Yet another TIFF variation, this one pushed by Adobe. Has a number of advantages and disadvantages:
Good:- Defines a standard way to encode raw sensor data
Defines a standard way to transform colour
Bad:- Takes the proprietary RAW format problem and makes it much worse, with MakerNotes et al now being moved about.
Offers the option to include the entire original raw file - but unless everyone actually uses this (thus doubling file size) just gives a false sense of security.
Makes no attempt to define a standard way to store all the data currently stored in undocumented ways in MakerNotes.
[Section removed on clarification of Adobe RGB profile status]
Takes MakerNotes and moves them into another format, both perpetuating the problem and making it worse (as decoders often rely on absolution location information in Makernotes)
Makes no attempt to extend EXIF or TIFF/EP in a coherent fashion.
Controlled by a single manufacturer - Adobe - who given don't have a good history of managing the TIFF standard or allowing software developer of Adobe controlled software profiles or standards.
I understand the dilema with making a file format the standard that is owned by a specific software company.
I would prefer to see an open source solution.