[Digikam-users] Color management with Nikon d40x

[junk at lexoncom.com]

this explains everything, I thought that those thumnails were small.
But , i tried to extrat one and it was 903K. Big enough to look very good.
One more think, I am curious if Nikon software also displays JPEG as
preview while editing or those are Raw images converted to working color
space and then updated while editing?
Now I understand algorithms used by nikon raw converter and digikam may
differ and the final output will depend on how the users uses the editing
software editing features.  Initially I though that every software uses
same raw conversion and the image would only differ depending on how it
was altered during the editing.  It also looks like that it is better to
use original raw converters.

thx

> 2008/12/13 "Sveinn í Felli (IMAP)" <sveinki at nett.is>
>
>> Following message from Elle Stone via Gerard Kulzer
>> dated Tue, 13 May 2008 08:23:24 +0200
>> seems to respond to your questions.
>> Those thumbnails/lowresJPG's are made in the camera using
>> closed proprietary algorythms.
>> Cheers
>>
>> Sveinn í Felli
>
>
> the image used to render _quickly_ thumbnails in digiKam is a small jpeg
> image embeded in RAW and taken by camera during shot. It's not a full
> image
> resolution version, it's a reduced one generally used to render preview in
> TV or camera screen.
>
> This JPEG image use all camera algorithms to render properlly color/gamma.
> It's not the RAW image. In fact it have the same render than if you take a
> real JPEG image instead a RAW.
>
> But you cannot compare RAW image data and JPEG image data : RAW do not
> have
> color space, JPEG is always in RGB color space.
>
> Gilles Caulier
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