On Sat, 5 May 2007, Mark Cassino wrote:
> I usually shoot in DNG, mostly because I'm concerned about future
> compatibility. In the future, who will keep writing software to convert
> old propriety RAW files? And with operating system changes etc, how long
> can you count on being able to run the software you currently use to
> process PEF's (or any other proprietary RAW file?)
>
All you need is a C-compiler...
http://cybercom.net/~dcoffin/dcraw/dcraw.c
Throw a copy of the code on your archive disks if you're worried
about reading the PEFs in the future.
> The advantage of the PEF format is the compression, so you get more
> shots per card. I figure that it is easier to just shoot in DNG than to
> convert the PEF's after the fact. The exception would be when storage is
> at a premium - either because you want to minimize having to pause and
> change a card, or because you are limited in regards to the amount of
> storage on hand. So I may shoot PEFs while traveling or while shooting a
> critical event where changing a card could mean a lost opportunity - but
> I'll convert those files to DNG later.
>
>
> - MCC
>
I still cannot believe Pentax hasn't included DNG compression in
the camera yet. Does it use a more computationally expensive algorithm
than what they're using for the PEFs? I figured there'd be a firmware
upgrade shortly after introduction, but so far no dice. Weird.
-Cory
*************************************************************************
* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
*************************************************************************
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