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Digital BW, The Print

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Re: [Digital BW] Piezography BW ICC possible with QImage instead of Photoshop?

2007-10-14 by Paul Whiting

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Ernst Dinkla
<E.Dinkla@...> wrote:
>
> Paul Whiting wrote:
> > Greetings,
> > 
> > Just acquired an Epson 1280, with two sets of Piezograpy BW ICC carts,
> > the CD, all for $100. Didn't think I should pass that up. The
> > printer's hardly been used and the carts are in their sealed plastic
> > envelopes.
> > 
> > Now what.. I see in the docs I'm supposed to use the Color Settings in
> > Photoshop, but I have Elements and its Color Settings are very
> > spartan. The docs tell me I can use other imaging software by studying
> > the settings for Photoshop and using their equivalents in those
> > applications. I do have QImage... I looked at its menus and I see some
> > parallels. But I could use some help here... has anyone used Qimage
> > for this particular Piezography?
> > 
> > I would still use Elements for its other features, cropping, sizing,
> > etc. but then I would think I could print the PSD files in QImage,
> > using its color settings instead.
Thanks very much, Ernst, I'm going to have to study your answer. I'm
still learning what all these terms mean!

Paul

> > I'm a newbie... lots to learn. Thank you all in advance!
> 
> Several things to think off.
> 
> Greyscale images is no option in that Elements>Qimage 
> workflow. But neutral RGB is.
> 
> Elements uses AdobeRGB when best CM is chosen in color 
> preferences. It gives you a choice to assign sRGB or 
> AdobeRGB to an image that has no profile assigned when 
> opened but doesn't give that choice when the image has a 
> profile assigned. It will save that file again with the 
> profile it originally had or got when opened. Elements is 8 
> bit color RGB only which shouldn't be  a problem with Qimage 
> as it is 8 bit color RGB only. I do not know what color 
> space is recommended for Piezography, AdobeRGB = 2.2 Gamma, 
> sRGB = 1.8 Gamma. You better save as a Tiff and not as PSD 
> as Qimage isn't that reliable with PSD (for example size 
> issues).
> 
> Qimage may have a problem with the Piezography profile if 
> perceptual rendering + BPC is chosen. At least it has that 
> problem with the QTR profiles but I do not know whether they 
> are alike on that aspect. If there are issues with low Dmax 
> and shades not fitting properly then try some alternatives 
> like BPC off and Relative Colormetric with and without BPC. 
> For the rest it is as usual: driver CM control off and 
> Qimage CM control on.
> Be aware that if you do not have an embedded profile in the 
> image Qimage will look for EXIF data to make a good guess 
> what profile it should be and if no EXIF data is available 
> it will assign a profile automatically. sRGB by default but 
> that preference can be changed in the color management settings.
> 
> 
> -- 
> Met vriendelijke groeten,  Ernst
> 
> 
> |  Dinkla Grafische Techniek  |
> |     www.pigment-print.com    |
> |             ( unvollendet )            |
>

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