Steve almost missed your post as the title changed. now I hope it's properly descriptive.
steve(at)imageri.com (Steve Climpson)::3/7/04::2:44 pm:: GMT+0100 sorry listmom, couldn't snip, or reply becomes cryptic. >> Well, ISO / FOGRA / ECI have now done it for us. We currently have the >> technology to make ISO certified proofs on a well set up inkjet >> printer, and to certify those proofs by measurement of a media wedge >> (colour strip) licenced from FOGRA and measured to strict ISO >> standards. On every proof if need be - This removes many of the >> problems inherent in file exchange, as long as the printer can print to >> (or near to) the ISO standard. >> >> It's the way of the future. >> >> see www.eci.org > >Neil > >With the ECI work in mind are you now advocating a shift to eciRGB working >space instead of adobeRGB or similar current spaces? no just because we are using an ISO CMYK there is no clear reason to change to an ECI RGB space. The 2 are only related by volume + white point and colour management takes care of that pretty well. I'm not in love with Adobe RGB but as it has become something of an industry standard it seems sensible to stick with it in many cases. However, once we look into it, the plot thickens. >Would you comment on the suitability of using eciRGB? >I've not used it but reading the ECI site I would hazard a guess that it >lies between colormatch & adobe RGB in gamut. ECI is bigger in some areas, smaller in others. I strongly recommend Chromix Colorthink to anyone who wants to know more about profiles specifically gamut volumes. It's great tool. Link at: http://www.colourmanagement.net/profilgear.html At our own seminars (and at GATF Arizona last December) I talked at length ;) about moving data INTO workingspaces and the damage that can so easily occur if it's not done sensitively. So many people just push the button it's scary. Amazingly no one else I know of ever talks about this! Even ARGB can inflict damaging clipping to an incoming image, ECI RGB would, therefore, in some cases, do even more damage. Most clients I've trained see this as one of the most important steps in maintaining image integrity. Having spent years researching this very procedure, I've even devised and made special scanner profiles for some users just to make this step smoother. There may be other reasons to choose ECI RGB, I've not yet heard compelling arguments, although I see that ECI is a D50 space whereas ARGB is pretty much D65, one point to ECI perhaps, also that ECI is Gamma 1.8, whereas ARGB is G 2.2. G 2.2 is said to be perceptually more linear. One all then. ISOcoated.icc (and ISO webcoated.icc) both include some yellow which is outside of Adobe RGB, that could matter in certain files, especially since some scans contain yellows not able to be accommodated by ARGB. Workingspaces are not easy to specify, one size really does not fit all, there is no BEST workingspace (although one, from my friend Don Hutcheson, does have that name and is pretty good as a prepress space as it easily accommodates the whole of the ISO spaces, Don tells me he has had quite some success with Best RGB at USA ad agencies. It's also almost able to contain a whole scanner gamut as defined by Don's excellent HCT scanner targets.) Anyone interested, I can get those HCT's too. Remember, currently (icc2) no perceptual transform is available INTO a workingspace. That's the BIG issue. You didn't expect a simple answer did you?? ;-) Regards, Neil Barstow :: Apple Solutions Expert :: colourmanagement.net Consulting in Imaging & Colour Management, custom profiling, training, seminars implementation :: WE RESELL :- Gretag+eyeOne :: basICColor Squid, Display etc. XRite. :: GTI viewing booths :: Epson :: Proofmaster RIP + ISO Proofing solutions www.colourmanagement.net/ :: www.apple.com/uk/creative/neilbarstow/ =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
