Re: RGB Color Space Info Request
Re: RGB Color Space Info Request
- Subject: Re: RGB Color Space Info Request
- From: Barry Gorrell <email@hidden>
- Date: Wed, 27 Nov 2002 14:36:35 -0500
- Organization: Cecil Community College
Bruce L. & Other 'Sync' List Responders...
Thanks to all for your replies to my "RGB Color Space Info Request". The
responses; be they technical, editorial, or philosophical in nature were always
informative and/or entertaining and very much appreciated.
Bruce unlike you, I had no idea that my original request would provoke the
amount of response that it eventually did. Thanks especially for the
information on several of the more common RGB spaces that you recently posted to
your web site <
http://www.brucelindbloom.com/WorkingSpaceInfo.html>. That was
exactly the sort of technical information I had in mind in my original request.
The non technical side of my request has not been addressed quite as succinctly,
but perhaps that's impossible given the diverse range of comments and opinions
that were expressed on the issue. In the hope that more specific info regarding the
"typical" workflow our students encounter might prompt additional commentaries, I
offer the following...
The majority of our students work with files from mid-range digital cameras
(Olympus 2500XL's, E-10's, E-20's & Nikon D1's). Typically sRGB is either the
embedded or "intended" space for files produced by these cameras. I would like
however to provide a brief commentary on slightly larger spaces (i.e.. Bruce
RGB, Adobe RGB, ECI RGB, etc.) that might reasonably be assigned to those files
to provide increased color saturation or color biases, etc.
I'd also like to provide brief commentaries on the various film scanning and/or
archiving RGB spaces such as (Ekta RGB, Don RGB, Best RGB, ProPhoto RGB and
etc.) The film scanners in our lab are far from high end however, as they
consist mostly of Canoscan 2710's, a Nikon LS2000, Polaroid SprintScan 4000 and
3 midrange flatbeds for larger formats (Linotype-Heil Saphir ultra II, Agfa
Arcus 1200 and Epson Expression 1680... alas an old Leafscan 45 was recently
"decommissioned" due to needed repairs.)
The current 'default' RGB work space in our lab is Adobe RGB 98. All student
files are eventually printed on a variety of custom profiled printers (via
EyeOne UV & MonacoProfiler) including Epson 1280's, an Epson 5500 via an
ImagePrint RIP and a Fuji Pictro 3000.
If anyone would care to offer additional BRIEF commentaries on any or all of the
RGB spaces that Bruce Lindbloom has so graciously posted the technical specs for
on his website, they would still be greatly appreciated. Bruce... Thank you,
thank you, thank you!
Barry Gorrell
Cecil Community College
VCP Lab Manager
North East, MD 21901
email@hidden
http://www.cecilcc.edu
____________________________
On Mon, 25 Nov 2002 15:49:52 -0600 Bruce J. Lindbloom wrote:
>
>
>
I knew that when Barry Gorrell originally asked for comments about working
>
spaces, he would hit a nerve with some people. I just had to smile when I
>
saw the variety of responses. Spanning the entire "gamut" all the way from
>
those who have spent countless hours developing their own working spaces to
>
those who say that it doesn't even matter what working space you choose (so
>
stop talking about it!) to those who are happily not using any working space
>
at all.
>
>
So it got me thinking. Is the choice of working space important? How do you
>
choose the best working space? (I suppose you could just pick "BestRGB"
>
since they wouldn't have let Don Hutcheson name it that if it wasn't really
>
the best, right? Just teasing you, Don.) How do you compare the relative
>
merits of two working spaces? What are the desirable properties of a working
>
space? How would you go about designing one that meets certain criteria
>
(aside from using trial and error)? These are tough questions, and the more
>
I think about them, the more I realize how little I understand about this.
>
>
In an effort to get some sort of grip on working spaces, I have collected
>
some information pertaining to 15 of the most common ones and have put it
>
under the title "Information About RGB Working Spaces" in the "Color"
>
section of my web site. I hope it will give a better intuitive understanding
>
of different working spaces. For the benefit of those who don't have
>
ColorThink (like me), I have also included some very simple views of these
>
working space gamuts. You can find it here:
>
<http://www.brucelindbloom.com/WorkingSpaceInfo.html>
>
>
Anyway, I just found the whole issue very thought provoking and I hope
>
others have also (always keep an open mind). I thought I knew more about
>
this topic than I really do. It will give me something to ponder over the
>
Thanksgiving holiday...
>
--
>
Bruce J. Lindbloom
>
email@hidden
>
http://www.brucelindbloom.come
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