Paul Roark wrote: >>My resolution tests sure do not show an advantage to the Piezo driver with >>respect to the detail that can be printed. See the scan of test prints that >>had high resolution line pairs. The image file name is "Piezo-Epson >>Resolution Test.jpg." Della wrote, >This is simple. Your scans need improvement. ... The original resolution test files were not scan files, but made in Photoshop -- no MTF or other image degradation. The scans of the printed test strips were done on an Epson Expression Pro at 1600 dpi -- way beyond what the printers can do. The scans agree with what I saw with a magnifier. The results were also the same when the dark line density was changed to 50% as opposed to 100%, for what it's worth. I might add that I think I produced sharper test prints with an older Piezo driver. I think the various attempts to hide the microbanding has reduced the final print sharpness a bit. So, sorry, it's not so simple. Paul http://www.PaulRoark.com (PS - I now use a Nikon 8000 film scanner and use an X-Rite Swatchbook for the curves that I do in-house.)
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[Digital BW] Re: Piezo v. Epson resolution -- was (unknown)
2002-05-06 by Paul Roark
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