I agree. 24 or 32 bit LAB with headroom is the way to go for archival purposes. <div><br></div><div><br></div><div><br><div class="gmail_quote">On Tue, May 17, 2011 at 2:27 PM, Graeme Gill <span dir="ltr"><<a href="mailto:graeme@argyllcms.com">graeme@argyllcms.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">Scott Geffert wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
When we assume sRGB in any part of the imaging workflow we are essentially clipping<br>
many colors that most modern printers (and even displays) can reproduce. In fact, Adobe<br>
RGB clips about 10% of these very printable colors which to me is unacceptable. When<br>
you are discussing "internal" spaces or untagged spaces for "no color management" I<br>
would argue that sRGB is not the way to go and many feel that ProPhotoRGB is too large<br>
but eciRGBv2 is ideal. It is L* based, it has a 5000k white point and the gamut is<br>
</blockquote>
<br></div>
There is no compunction to use RGB spaces for wide gamut. Use L*a*b* or something<br>
that is inherently suitable for wide gamut (even scRGB might be better than any of<br>
the RGB spaces you mention).<br>
<br>
It's not a good idea to use a wide gamut space as a default space for "mystery meat" RGB<br>
either, if it doesn't match typical expectations, which are often set by displays.<br>
Looking at it statistically, your extreme measured colors are at the tail of the<br>
probability curve, and therefore could be safely ignored for most everyday practical<br>
purposes -i.e. if you are one of the few people who care about accurately reproducing<br>
such extreme colors is important to you, don't use an unlabelled colorspace to store the<br>
color values !<br><font color="#888888">
<br>
Graeme Gill.</font><div><div></div><div class="h5"><br>
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