For quality they're the same. PEF's are slightly compressed. Often a PEF from the K20D will be the same size as a PEF from the *ist-D ~10mb-15mp where as DNGs from the K20D are ~23-25k in size. I'm pretty sure things haven't changed from the K20D to the K-7.

On 2/7/2010 8:50 AM, Tanya Love wrote:
So to all you tecchie-heads, who can answer this question??

Now that I have the option (with my new K-7) of choosing between .pef and .dng, 
I am wondering why there is such an option and which file format is better, or 
are they both a much of a muchness?  Can anyone help me here?

Tan. ☺




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\viewkind4\uc1\pard\f0\fs20 I've just upgraded to Thunderbird 3.0 and the 
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