Converting to DNG without RAW embed increases file size...????

I convert all my Canon CR2 Raw files to DNG. I have recently noticed though that selected folders full of these DNGs are twice the file size of the original CR2. The thing is, I have never embedded the original CR2. My file sizes go from a little over 12M to 25M in the conversion. When testing to try to find the problem, I found that when I do embed the original that file size increases to 30M. If I try to go backwards, selecting a folder that contains the larger-than-normal DNGs, and I try to extract the original CR2, it tells me there is no original to extract. So from everything I can tell, these files are doubling in size for a reason other than the original Raw file being embedded. As far as I can tell, there also is no rhyme or reason to how some folders end up with normal file size DNGs, and others are double the file size....Anyone know?

Reed:
Why don't you use the lossless compression algorithm? Absolutely no data is lost. Not a single bit is changed. The image data is preserved EXACTLY. That is what "lossless" means--there is no loss at all. The "way you see it" is wrong.
The ONLY reason the uncompressed option is available at all is so simple third party utility programs can read the files if their programmers have not written the code to decode the lossess compression agorithm yet. Even this is less of an issue now since Adobe provides the free DNG SDK with source code that does this decoding.

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