Originally posted by SuperJared PEF has a smaller (compressed but lossless) filesize and ... stores more vendor specific information ...
I have believed the Pentax manual that the file size was the same; but this thread has prompted me to actually conduct my own measurements.
DNG file size: 17,101,294B (does not appear to vary)
PEF file size: 15,840,000B (approx,depending on subject matter as one would expect with compression)
I invariably get 120 images on 2GB 240 on 4GB. I calculate that this will translate to 150 and 300 (approx)
RE: Image quality etc: I did not believe the people who said that ACR & CS2 could read more from the PEF files but my objective tests of the same subject matter (landscape) confirm this unequivocally.
However I have not yet confirmed whether DNG converted can translate this extra info when it compressed this file to about 10MG.
Thank you all for a very useful thread.
Ron McDermott
Brisbane Qld