I have converted some NEF files to DNG without compression but the conversion were performed WITH compression!

How to avoid it?
Bernard

As LR5user correctly notes, dng ALWAYS uses compression. You can only choose whether you want lossy compression or lossless compression. If you did not check the lossy compression checkbox, it will use a lossless algorithm. You do NOT want to avoid this as you are only wasting disk space if you don't use that compression. There is no loss of information. You should end up with files that are somewhat smaller than native raw files as the compression is somewhat more efficient than what camera makers use in their cameras in general.

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