Message
Re: [colorvision_group] Re: Printfix Pro and blues
2006-03-19 by CDTobie@aol.com
In a message dated 3/18/06 7:39:55 PM, bwinkjet@... writes:
If your monitor is profiled and the soft proof shows purplish blues
then the profile is not at fault. I would suggest you soft proof in PS
or your imaging editor and work with HS for blues and correct the image
on screen and then print. If there is close correlation print to soft
proofed screen, then the profile is doing its job.
Well... thats a tough one. Its doing ONE job, which is representing the print on screen in SoftProof. As the posts on the topic here show, people also have a range of other expectations as well. Unfortunately, when and out of gamut blue is brought in gamut, the visual non-linearity of Lab space can make the blues turn purple, since the nearest in gamut color to a given blue may well be a less saturated, but more purple, tone. There are tricks to try to precorrect this, but as I noted earlier, they may not suit other users, so having them invisibly hardwired into the software is not necessarily ideal.
Its a bit like the Monaco fix for Relative Colorimetric printing with Black Point Compensation in Adobe Applications... yes, it gives better RelCol w/BPC results, but it clips all dark tones without BPC, or in apps that don't offer BPC, so its a compromise with a downside as well as an upside. We want to avoid causing more problems then we solve.
I have observed here, and elsewhere, in the past that what users "expect" from a profile is often different in blues than in other colors. Someone just commented that the Saturation intent "fixed" his yellow issues (in other words, did what he expected for yellows) but was unsatisfactory for blues (in other words, did not do what he expected there)...
I'm beginning to think that the ColorVision Perceptual intent, which is somewhere between the RelCol results and the Sat results, might do well to offer something closer to the warm color results of Saturation, with something closer to the cool color results of Relative Colorimetric. Anyone that would find that to be a good solution?
C. David Tobie
Product Technology Manager
ColorVision, Inc.
CDTobie@...
www.colorvision.com