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This is a plea for help to any of you knowledgeable color calibrationists. I have EZcolor. The problem would appear to be that it is not accurately generating a printer profile. That's how it appears, after many many hours of trials and tests and use of expensive ink and paper. Whether that IS the problem remains to be seen; that's how it appears so far. The test target appears to print well as printed from the CD. These are Lyson inks, new to me; they are less vivid than Epson's, which I expected. Given that, however, they look well printed. I have not been able to scan from EZ. It does not "see" any plugins in the import/export folder, even though they are there- color sync's and my scanner's. So I have had to scan first, save as a TIFF RGB. Then EZ opens the scan using the "input image" button. The scan looks like this: The IT8 target looks great; vivid, saturated. The printed Lyson target looks washed out in comparison- in other words, it looks less like the original printed target than the IT8 scan looks like the original IT8 target. That seems consistent, I guess. If the scanner software (LinoColor 5.0) is basing its base density on the IT8, which I guess it would, since it has the greater range, then it would seem that the shorter range of densities of the Lyson target would get "placed" on a higher part of the curve- thinking in photography terms. I don't know if any of that's right. But it seems consistent. I would think, though, that the whole point of all this is that the software would compare the two targets and then stretch the Lyson target's values to approximate the IT8 as best as it can. What happens is that the colors get shifted bizarrely. First of all, it blows everything out. It looks like a typical bad scan or something off the internet where you have to adjust the contrast in curves to get rid of the "fog". Then it makes everything either red or blue. It does it when printing, and it does it in profile to profile. In other words, the print and the conversion in profile to profile from my monitor profile to the printer profile are consistent with each other. That's why I say it appears that EZ is generating a bad profile. The monitor profile seems to work fine in that things on the monitor look great. I've had questions about how to set everything, though. Larry at Cone Editions (very helpful, by the way) suggested ColorMatch rather than Bruce RGB as the editing colorspace. These problems were happening while I was still using Bruce, though; the new color space hasn't changed anything. The only thing is that ColorMatch is a D50 space. If you change the monitor temp to 6500 in the RGB setup box, "ColorMatch" turns to "custom". I assume that that just means that that one setting has changed, but I don't really know. Now, there are many indications that 6500 is the preferred temp (Mac). Also a gamma of 1.8. Another set of variables is that my card, a Twin Turbo 128 4MB, has its own control panel. It has these controls: Channel gain, which I've left alone; Monitor Temperature, where you can set 5000, 6500, or 9300; Desired Monitor White Point, with those points plus others; Applied Gamma, where you can choose: linear, trinitron, typical p22, TV dim or TV normal. Or you can check Use Custom Gamma, which allows you to manually set the gamma. Back to EZ: If I select 6500 for both the monitor temp and the white point, and select 1.8 as Custom Gamma, when I look at the four rectangles where you set brightness and contrast in EZ, I have to set the brightness on the monitor (RasterOps) all the way up in order to get any seperation in the dark boxes, and then there's still not enough brightness to seperate the darkest two boxes. If I choose "linear" on the Twin Turbo control panel, I get more appropriate seperation, so that's what I've done. Also D50 works. There's also a "Use System Gamma" checkbox on the Twin Turbo control panel. I don't know what it's supposed to do; I check it and nothing seems to happen. The white squares- I don't know what's going on with them. I can't get them to be "barely distinguishable from each other" unless I crank the contrast so far down that it just can't be right. It just doesn't feel right to run things either wide open or all the way down. Then, in the ColorSync control panel, I choose my monitor profile. The monitor always looks great. In Photoshop I've set everything to "ask when opening". I doesn't seem to make a difference how the file looks on the monitor unconverted versus unconverted. Larry gave me several suggestions for setting things in Epson's print driver. The results are all similar. Sometimes I can get a different result, but it's not accurate or good, just different. The only othe symptom I've noticed is that after setting a profile, the next day things look too red. That was when I had the gamma in Twin Turbo set to 1.8. I've since reset it to "linear". So far I haven't seen that color shift. I had none of these problems before EZ color. I always got decent results with just the stock driver and ColorSync. It's just when I wanted to go to the Lyson inks that I thought I needed to profile. And I still want to; I'm just getting really bummed about the whole thing. I've always had a problem here or there, but I've always been able to work through them myself. Not this time. I might mention again that I have LinoColor 5.0. I have attempted to turn all of its color management off, to get as "raw" a scan as possible. And, set that way, as I say, the IT8 target looked great. I've never had any problems scanning with it- the scans always looked great. It has its own internal calibrator software, which I attempted to investigate but which, after a long night of this crap left me hoplessly confused (computer manuals weren't bad enough in hard copy. I HATE CD ROM manuals. And yes, I do print them, when I can find the section I need.) So I changed nothing in Lino Color. I realize this is a long list of items. I'd be grateful if anyone has any suggestions on any of this. I wrote a lot of this to Larry, but I know he's preparing to go to a conference. So I haven't heard. (Some of my posts to the Painter list haven't appeared. Is some of my e-mail getting lost somehow? Does that happen?) Thanks to anyone kind enough to wade through all these variables and come up with any ideas. There may be other things, such as those variables in the print driver boxes, although, as I said, changes there haven't made a difference except to maybe crash if you specify the working space profile where it says "space". James Irelan - Please: Stay on topic. Trim quoted messages. http://www.leben.com/lists for list instructions.
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