On Apr 28, 2006, at 1:03 PM, Cory Papenfuss wrote:
I was under the impression that the current version of dcraw had
been updated to handle DNGs. Is that not so?
Yes, it supposedly handles DNG's. I'm talking about the conversion
from a PEF *TO* a DNG. There is no utility (that I've found) that
will do it.
Ah yes. That part of it you're out of luck on for the present.
Besides, unless there's more metadata information extracted in the
process, there's no point in obfuscating the file anymore.
First off, the original capture file is the source ... How could you
"extract more metadata in the process" of converting from PEF to DNG?
DNG conversion simply moves all the existing metadata into the DNG
format, along with the sensor data. The real advantage of the DNG
format, aside from taking up less space through applying lossless
compression to the sensor data, is that it was designed to be a
container format so more metadata can be added to the RAW file itself
(RAW processing parameters, IPTC data, etc) without otherwise
affecting the RAW data at all. So ultimately a DNG file usually has
more metadata in it but the additions come from processing with savvy
applications, not from the original RAW format file.
Godfrey
