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The same thing happens with Sony A900 compressed raw files. I have found if
I don't use the compressed raw but the regular raw that I will actually get
smaller DNG files than the compressed raw file.
> a 12MB 5d file is churning out a 25MB file
> Compression off
> Any ideas....??
i compression on?
> I have found if I don't use the compressed raw but the regular raw that I will actually get smaller DNG files than the compressed raw file
1. The Sony A900's "compressed raw" is not only
as well (in other words: it is
raw). When converted in DNG format, the lossy data gets converted into lossless format (of course this does not make up for the inherent lossiness). Therefor the DNG format is larger.
2. The "normal" (lossless) raw data of the A900 is compressed by "packing", which is the cheapest (fastest, but least effective) way of compression supported in raw files. When converted in compressed DNG, the more effective compression will be applied.
Thank for the info. But that wasn't my point. My point was that on rare
occasions files sizes can be bigger and it has to do with the type of