[argyllcms] Re: Misc questions about color management

Thanks for answers to points 1 to 3.

Le Jeudi 16 Mars 2006 11:59, Kai-Uwe Behrmann a écrit :

> The sensors are in theyre own color space. Assigning sRGB or AdobeRGB is
> a convenience function of the camera software. You should profile your
> camera individually with a IT8 camera target. With the resulting camera
> profile you can convert you image to a proper editing space eighter on
> the command line or in CinePaint during loading.

Le Jeudi 16 Mars 2006 11:42, Graeme Gill a écrit :

> I can't give you any specific information about your Canon 20D, only
> general observations. Presumably the camera converts the sensor color
> values (which it will have some idea of the colormetric response of),
> into the nominated colorspaces. It will (also presumably) apply
> whatever processing it sees as "good" to the image data before
> it does so (ie. renders the captured data into an output referred
> state by setting white points, contrast range etc.)

So, the camera has its own sensor profile, to convert from the sensor 
colorspace to AdobeRGB98/sRGB. Do external programs act in the same way ? 
They have a profile of the camera to convert from raw to specifed 
colorspace ?

I read that calibrating a camera is only usefull when shooting in a studio, 
where you always use same params (time exposure, aperture, iso...). Or do 
you think I can create a profil useable in all cases ?

-- 
   Frédéric

   http://www.gbiloba.org

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