Cory Papenfuss a écrit :
Wasting 10-15% on *every* picture for a useless JPEG is irritating.
True, but probably Pentax firmware uses this embedded JPEG data for the image previews, and *not* the raw data (just because this way the same algorithm can be used to display both RAW and JPEG pictures). The fact that even the histograms seem to be based on the JPEG data is quite significant. There's probably a fast harware-assisted JPEG compression engine, so the whole firmware heavily relies on JPEG data for all operations. RAW output is just an extra in the data fow then.
Using JPEG can even make zooming in/out during preview much easier and faster.
Patrice
