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Digital BW, The Print

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RE: [Digital BW] B&W with DSLR : Posterization problem

2004-01-28 by Paul D. DeRocco

> From: sceptre12345 [mailto:am1000@...]
>
> I've been printing some digital camera (6mp dslr) pictures lately and
> they all seem to have the same problem: the shadows posterize. This
> is one problem I have not had with scanned negatives.
>
> I dont know where this come from. Is it noise or something else ? I
> have tried some noise software but it give the picture a plasticky
> artificial look.
>
> Workflow: Open the file in Photoshop 7 with the RAW plug-in, convert
> to 16 bits and do all other adjustements in Photoshop.
>
> Printer: Epson 1160, UT inkset and Paul's curve.

I don't use that workflow, so I don't know the ultimate cause. But noise
won't cause posterization--indeed, it will tend to mask it. If you denoise
an image, either by blurring or with 3rd party noise filters, that's when
you're most likely to see posterization creep in.

--

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...

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