Archived posting to the Leica Users Group, 2001/07/06

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Subject: Re: [Leica] Re: scanning B&W: salt and pepper appearance
From: "Mxsmanic" <mxsmanic@hotmail.com>
Date: Fri, 6 Jul 2001 09:48:42 +0200
References: <00a801c10566$bb02a3c0$0300000a@marklaptop> <3B44BFBE.9835B0FD@rabiner.cncoffice.com> <001001c10597$12206cc0$0300000a@marklaptop>

Mark E Davison writes:

> The point is that the LS-2000 just isn't resolving
> the grain patterns.

Digital images of 3826x2551 pixels in size or less cannot resolve grain any
better than the LS-2000.  This is true even of the world's best print scans.
And an ink-jet printer, even when printing a 16x19-inch print, cannot resolve
any better than about 3600x2400 pixels, which is even worse than the LS-2000.
So whatever differences you see between print scans and film scans using ink-jet
output at anything less than poster size, it is unlikely to be a consequence of
any lack of resolution on the part of the LS-2000.

> You can get nice 6 x 9 prints with less
> unsharp masking--you just can't see that nice
> grain texture.

Unsharp masking won't help.  You need to increase the contrast between adjacent
grains, but without emphasizing edge transitions, and unfortunately USM does the
latter, not the former.  The result of a USM will look sort of grainier, but it
won't look like the original grain in the photograph.

In reply to: Message from "Mark E Davison" <dmark8@qwest.net> ([Leica] Re: scanning B&W: salt and pepper appearance)
Message from Mark Rabiner <mark@rabiner.cncoffice.com> (Re: [Leica] Re: scanning B&W: salt and pepper appearance)
Message from "Mark E Davison" <dmark8@qwest.net> (Re: [Leica] Re: scanning B&W: salt and pepper appearance)