Re: RGB working space in PS
Re: RGB working space in PS
- Subject: Re: RGB working space in PS
- From: email@hidden (Bruce Fraser)
- Date: Wed, 20 Feb 2002 12:10:06 -0800
At 1:54 AM -0800 2/20/02, DScharf wrote:
EktaSpace (or JoeRGB) looks like a reasonable space for a level 2
archive and for editing for film recorder output. I also archive all my
direct digital acquisitions from my S.E.M.'s detector photomultiplier
amplifiers as raw files. Can you tell me what the Ektaspace co-ordinates
are ( I have a rough idea), as the file is no longer posted on the site
you referred to?
Gamma =2.2
White point =D50 (White xy = 0.3457,0.3585)
R xy= 0.6950,0.3050
G xy= 0.2600,0.7000
Bxy= 0.1100,0.0050
Joe also created a LUT-based Ektaspace for which he quite reasonably
wanted money. I'm not sure what the status is on that nowadays. If
you're curious, you can contact him at email@hidden
Does it sound like a reasonable strategy to take an Ektaspace tagged
file and, using Adobe RGB 1998, "convert to working space", for files
that will be output to ink-jet printer?
I'd be more inclined to go from Ektaspace straight to inkjet space. I
don't see what the extra conversion would get you on the majority of
files. (The one case would be where you needed to make an edit that
was smaller than te granularity of Ektaspace, and for some reason you
didn't want to do it in final inkjet space.) Conversions between
same-gamma working spaces are pretty benign so it won't do anything
terrible, but I don't think it would do anything terribly more useful
thah simply using Ektaspace as your working space.
Can Adobe RGB 1998 gamut space be modified so the Yellow (B+)
co-ordinate is more into the yellow region, in order to encompass the
capability of the new ink-jet printer inks, even though this would
probably create Greens that could not be displayed on a monitor? Or is
there little advantage to that with a well profiled printer-ink-paper
combo?
Possible, yes. Advisable? I'm not convinced. Adobe RGB already
contains a lot of greens that are outside the gamut of any device.
Ektaspace covers any inkjet gamut I've yet seen.
Bruce
--
email@hidden
_______________________________________________
colorsync-users mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/colorsync-users
Do not post admin requests to the list. They will be ignored.