Estimated File Size K10D

[Patrice LACOUTURE (GMail)]

IIRC, the *istD not only does not compress RAW files, but also stores 
pixels in 16bits instead of 12, taking up 30% more space than necessary 
in the process.

10 Mpix should take 20 Mbytes if sampled at 16 bits, 16 Mbytes at 12bits 
(without the attached JPG preview). While lossless compression works 
quite well with 8 bit pictures, I've always had inefficient compression 
rates with 16bit images (I assume it gets harder to find two identical 
pixels to compress!).

If the K10D produces 11MB 16bit files, this is almost 50% lossless 
compression, which would be pretty good indeed! Hopefully it's indeed 16bit.

Patrice

Rick Womer a écrit :
> Nifty!  My ist D give me 144 PEFs on a 2 gig card.
>
> Rick
>
> --- Mark Roberts <mark at robertstech.com> wrote:
>   
>> K10D uses lossless compression for its RAW files.
>> They're claiming 185
>> on a 2-gig card, which works out to be about 11 Meg
>> each.
>>  
>> -- 
>> Mark Roberts Photography & Multimedia
>> www.robertstech.com
>> 412-687-2835
>>