That's odd ... I just converted about 10 PEF files ranging in size from 13099kb to 13637kb to uncompressed DNG format and got sizes from 4957kb to 6253kb, IOW, about 1/2 the size of the original files. Using Winzip 8.1 resulted in sizes similar to yours.
How were you able to use the Adobe RAW converter to convert a PEF to a DNG? I used the DNG converter. Shel > [Original Message] > From: David Savage > Using Winzip 8.1, a single 13.1 MB *ist D .pef file compressed down to 8.5 MB. > > Converting the same .pef using the Adobe RAW converter, to an > uncompressed .dng resulted in a 11.8 MB file. >
