With regard to the "Highlight Point Shift," Epson is apparently responding to the one area where something similar to bronzing occurs with K3 inks on semimatte (and presumably glossy) papers: if you have a totally blown highlight of any size (tsk, tsk), no ink is laid down and there is an unavoidable gloss differential from the rest of the print. Adding a little gray over the entire print should solve that, but the cure is worse than the disease (or at least there are better cures). As for the ABW settings and shadow detail, the Epson recommended "Darker" plainly compresses the shadows too much; Dark is better, and Neutral appears best on Premium Semimatte on a 4800, in terms of maximum shadow detail. Printing an image with an adjoining 21-step wedge, indeed, suggests that Neutral is better than Imageprint 6.1 (50-50, black point 50) in that respect between 90/95/100. But on the image, Imagemprint appears to have better shadow separation on all but the very deepest shadows (and the difference there, if any, is difficult to detect), perhaps because of superior linearity. Interesting the different conclusions that seem to be suggested by test strips and actual images. --- In DigitalBlackandWhiteThePrint@yahoogroups.com, mitcha@m... wrote: > > Clayton: > > > I'm wondering if what you're seeing is the result of some kind of > > driver setting. There is something in ABW mode called "Highlight > > Point Shift" > > Yes, it seems that the dealer had applied Highlight Point Shift, > which I would never use; but that makes wonder whether there would be > gloss differential when not applying HPS? In that case, I might not > switch to a K3 printer because I would still have to laminate the > prints, and I'm getting stunninf prints by laminating the 9600 UC ink > prints. > > > > >The ImagePrint print has more shadow detail than the one made with > > >the Epson Driver Advanced B&W mode. > > > > ABW settings are also important here. There is a "Tone" picklist > with > > 5 choices from "Light" through "Darkest", and it turns out that this > > does more than an even change of the over all density. It turns out > > that the actual contrast curve is modified so that the shadow zones > > are increasingly compressed as the setting gets darker. .. > > For some reason Epson's default setting is "Darker", so > > we must be careful to put this where we want it. > > Interesting: so it turns out the shadow detail could be good. > > --Mitch/Bangkok >
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Re: Comparison: K3 versus Ultrachrome inks on Semi-Matte + ImagePrint
2005-11-17 by Bill Iverson
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