What X-rite did was provide a method of visually 'tweaking' a profile based on viewing output under the conditions where the final print will be viewed and comparing it with their targets of gray patches with numbers one inserts into the software for dog knows what compensation. Then you visually compare the two. I think, like the idea of a good profile editor (where you work visually, not numerically where sometimes we do get into trouble with visual mismatches), makes sense. This is kind of what's happening here.You have to view the X-rite supplied target and what you print from the profiles side by side, on-site where you wish to view the prints for that compensation just to enter a value into their software.
Do you think that the XRite visual approach is better than the dual-scan approach? I would have thought that with dual-scan the profiling software can see exactly what the fluorescent effect is on all of the colors in the target. Since the software knows the UV content in the instrument's light, and as we specify the target illuminant (or measure it), the software should then be able to extrapolate to the target illuminant fairly accurately. For standard illuminants the UV content should be known, but I do have a question about how i1Profiler estimates the UV content of the illuminant from a measurement (since the i1Pro2 cannot 'see' the UV) ... any idea where we could get an answer?
In the end, it's a mess which causes more work but would all be avoided if you just cease using papers with high OBA's and control how the print is being viewed, something that isn't always possible.
Yes, totally. The question is, how do we know how much OBA is in the paper? Canson specifies that papers like the Platine have no OBAs, but for other papers like the Baryta there is no mention of OBAs so I assume that the paper will have some (but probably not much as the whiteness will mostly come from the coating).
I just built a customer a profile from HanaPhoto Luster 260, the paper white had a bStar of -9.13!
Nice blue paper . But a b* of -10 may just show that the paper is blue; it may contain little or no OBAs. Probably a better estimate would be to look at the tell-tale hump at the blue end of the spectrum (from reflected white). Argyll's spotread is good for that.