Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Ernst Dinkla <E.Dinkla@c...> 
wrote:
> 
> > That would be great.  I'd love to see some more comparisons.
> > 
> > The test file is at:
> > http://harrington.com/technical.psd.zip
> > 
> > All prints were done with no manipulation of the file.  All full page.
> > They were are scanned using an Epson 3200 at the 1200 dpi setting.
> > using the ordinary Twain plugin of Photoshop.  I let the software
> > pick the endpoints with Auto -- I think you need the full page to get
> > good endpoints so the preview can see the full range of densities.
> 
> 
> 
> I hardly ever use the Epson scan software and the plug-in even 
> less so to get it right ...........
> 
> Auto in the sense of " full auto mode " in the Twain plugin ?  Or 
> "professional mode" + all the default settings but 1200 dpi and 
> unsharp mask off. That means in configuration: continuous auto 
> exposure, gamma 1.8,  1 x1 pixel sampling area.
> 
> There's another thing my 3200 is sharper at 1.7 mm above the 
> glass plate so I will try to get the print there. If your's is 
> sharper at the glass plate or 0.5 mm above it would show.
> 
> Ernst

It was the professional mode with default settings.  The scans aren't
"perfect" or ideal.   The idea was just to have a repeatable setting that
was good enough to show what dots are there.  I had tried a few at
3200 dpi and there's certainly better detail but I don't think they
illustrated the issue any better.  Also the jpg compression degrades 
the image somewhat.

Roy