> > This explains alot about the extra large raw file > size, I wonder what Pentax has in mind with the EIXF > information??
(I assume you mean the large JPEG image, not the EXIF information - we know where the EXIF values end up). I mentioned my hypothesis - it's for in-camera review. It certainly doesn't seem to get used after downloading. As for file size: There are 6M sensor values to record. Each is a 12-bit value. Pentax chose to use the TIFF framework for file layout. That means the 12-bit values occupy two bytes of storage; there's no way to pack two values into three bytes. So the PEF file is going to use 12MB of space for data, and around 1.5MB for a JPEG preview image. That's 13.5MB, which pretty much accounts for the file sizes that I see.
