Re: On the use of wide-gamut RGB working spaces [was: Photography editing spaces]
Re: On the use of wide-gamut RGB working spaces [was: Photography editing spaces]
- Subject: Re: On the use of wide-gamut RGB working spaces [was: Photography editing spaces]
- From: Karsten Krüger <email@hidden>
- Date: Tue, 7 Oct 2008 10:55:08 +0200
Am 07.10.2008 um 10:06 schrieb Marco Ugolini:
Common sense would seem to advise that a fine art photographer whose
work
contains strongly-saturated colors use a color space that is larger
than
that of any output device available today (inkjet or others), in
order to
preserve elements that may add esthetic value to the images if not
immediately, then in a reasonably not too distant future -- or
simply to
keep that option open as a cautionary measure, if nothing else.
After all,
once clipped, saturated color and detail cannot be recovered.
So, to say that the use of ProPhoto RGB makes sense only when accurate
source colorimetry (scene-referred) can be captured without gamut
restrictions, with perfect accuracy, and with no need for further
editing,
seems rather limiting to me, because it does not include the needs
of fine
art photography/imaging from Raw captures, which are *not*
necessarily in
agreement with that description.
Marco,
This holds true as long as there is no color tweaking done and the
input devices colorspace behaves well:
If you start tweaking colors that you can not see on the screen
anything can happen - and your screen is becomming the reference for
your color (I guess this is what Ken tried to say). If your input
device's gamut is shaped like a banana like some PhaseOne cameras,
color rendering might get things wrong due to non continuous areas and
a blue is printed purple (we had the discussion on this about 2 years
ago on the list). So there are advantages on both ways and a well
educated decission has to be taken.
Regarding the original question of Matt Beals:
If the image allready is in sRGB, there is no reason to convert it
into an other RGB colorspace. Don't convert unnecessarily.
If you are looking for a unified workflow think about where you make
your money. If it is shooting then be universal, deliver a color space
that your customer wants. If it is a print on paper start with the
printer and look at how it is optimized. Some are sRGB, some are
AdobeRGB, some are ISOcoated, some are SWOP. If it is for PowerPoint
presentations of web then it has to be sRGB.
Karsten
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