Re: Custom Made icc profiles for Lightjet
Re: Custom Made icc profiles for Lightjet
- Subject: Re: Custom Made icc profiles for Lightjet
- From: email@hidden (Bruce Fraser)
- Date: Fri, 1 Feb 2002 12:05:26 -0800
At 10:49 AM -0800 2/1/02, Steve Upton wrote:
At 12:35 PM +0100 2/1/02, Timothy C. Pitts wrote:
Can someone give me a good source for custom made icc profiles.We don't
have a spectro yet. Our colorimiter does seem to make very good
profiles.
We're printing RGB files to a Lightjet 5000 digital photographic
printer.
I think it is fair to say there are many members on this list who
build custom profiles. Our ColorValet service is one of the original
services and you can find out more about it here:
<http://www.colorvalet.com/>
We've been using Colorblinds Bruce RGB as a source profile. Does any one
have
any thoughts on that also?
Well... it is Bruce Fraser's not ColorBlind's (although you may have
downloaded it from them or received it from them in some way)
Bruce RGB was specified as an alternative to Adobe RGB (1998) to
avoid banding that may have occurred in the larger Adobe space. As
this does not seem to happen in production, Bruce - and others - are
now typically recommending Adobe RGB instead.
Steve builds very good profiles. If you get one built by him, you may
find it instructive to compare the gamuts of the Lightjet, Adobe RGB,
and Bruce RGB using his excellent ColorThink software's 3D gamut
viewer. In most of the LightJet profiles I've seen, Adobe RGB
preserves some dark greens that BruceRGB clips. Don't fix anything
that isn't broken, but I really intended BruceRGB for CMYK offset and
inkjet output, for which it still provides a fairly comfortable fit,
rather than the wider gamut achievable by LightJets and Lambdas.
The banding issue was a concern when I was dealing with 1995 captures
in 1998 -- I had a lot of images from capture devices that delivered
maybe six good bits per channel. I don't think anyone today is making
capture devices that won't withstand the rigors of Adobe RGB...
Bruce
--
email@hidden