03-16-2011, 06:14 AM
[quote name='mst' timestamp='1299925705' post='6686']
As I said, this doesn't change anything. DNG is not the simple and fixed format many believe it is. Especially when using the compatibility option for "ACR 2.4 or later", RAW files of some cameras are converted to linear DNG (even if you unchecked this option, since some sensor RAW formats simply cannot be reproduced in DNG RAW). Linear DNG means the RAW file is run through the demosaic algorithm of the DNG converter ... which uses the same routines as ACR with the same version number. So, with newer DNG converters, you're bound to use the evolved demosaic algorithms. With different quality in different versions.
[/quote]
Sorry but I find your reasoning hilarious in this context... even if what you're saying is true, there are only a handful of sensors out there that are different from the usual Bayer RGGB CFA design. E.g. Fuji Super CCD, Foveon, Achromatic+, Kodak CMY (DCS 620/720x), CYGM sensors from the late 90s, etc. The point being, unless you're going to use these unusual or very out-dated sensors for your tests, you have little to worry about with DNG v1.1.
Also it's so easy to check whether the RAW has been demosaic'ed... just look at the file sizes! lol
GTW
As I said, this doesn't change anything. DNG is not the simple and fixed format many believe it is. Especially when using the compatibility option for "ACR 2.4 or later", RAW files of some cameras are converted to linear DNG (even if you unchecked this option, since some sensor RAW formats simply cannot be reproduced in DNG RAW). Linear DNG means the RAW file is run through the demosaic algorithm of the DNG converter ... which uses the same routines as ACR with the same version number. So, with newer DNG converters, you're bound to use the evolved demosaic algorithms. With different quality in different versions.
[/quote]
Sorry but I find your reasoning hilarious in this context... even if what you're saying is true, there are only a handful of sensors out there that are different from the usual Bayer RGGB CFA design. E.g. Fuji Super CCD, Foveon, Achromatic+, Kodak CMY (DCS 620/720x), CYGM sensors from the late 90s, etc. The point being, unless you're going to use these unusual or very out-dated sensors for your tests, you have little to worry about with DNG v1.1.
Also it's so easy to check whether the RAW has been demosaic'ed... just look at the file sizes! lol
GTW