Re: UGRA/UDACT-conforming displays [was: i1Display x i1Pro]
Re: UGRA/UDACT-conforming displays [was: i1Display x i1Pro]
- Subject: Re: UGRA/UDACT-conforming displays [was: i1Display x i1Pro]
- From: Klaus Karcher <email@hidden>
- Date: Thu, 02 Apr 2009 17:39:12 +0200
Andrew Rodney wrote:
On Apr 2, 2009, at 7:40 AM, Koch Karl wrote:
Banding on the display of course, unless you hard-convert to monitor
space.
As I figured. Then why on earth care about the working space encoding
which is far more important.
The idea of altering the working space do reduce banding on a display
seems counter-productive.
... unless you don't want to tilt at windmills and battle against
banding which is neither in the source data nor caused by the source ->
printer transformation but visible on the display anyway.
The current capture device I'm using (5DMII)
has a great "gamut potential" and the output device I use (Epson with K3
and HDR inks) again has a gamut that, along with my Raw converter
convinces me that ProPhoto RGB is the most appropriate working space and
we know its got a 1.8 TRC. I'm not about to use that TRC for the
display, making most of this discussion moot.
You are right: ECI RGB v2 is too small for decent inkjet gamuts, but you
could use a working space with e.g. ProPhoto primaries and L* TRC.
We already discussed the pros and cons of huge working spaces like
ProPhoto RGB: If you want to avoid quantization artifacts in the data,
you are bound to 16bpc. That's no longer a big deal nowadays, but still
coupled with a performance penalty. A more crucial point is that many
Photoshop editing tools react too coarse in such huge working spaces.
Therefore I decided to build my own compromise working space with Bruce
Lindbloom's Beta RGB primaries and L* TRC. My clients and me are happy
with it and live would be even easier if ACR would let us choose this
profile as working space.
Klaus
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