Archived posting to the Leica Users Group, 2001/07/05

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Subject: Re: [Leica] Re: scanning B&W: salt and pepper appearance
From: Mark Rabiner <mark@rabiner.cncoffice.com>
Date: Thu, 05 Jul 2001 12:27:58 -0700
References: <00a801c10566$bb02a3c0$0300000a@marklaptop>

Mark E Davison wrote:
> 
> I tracked down the origin of the salt-and-pepper texture I was seeing. It
> results from trying to use unsharp masking to resolve the grain and recover
> the acuity of the B&W image. Basically with the Nikon LS-2000 at 2700 dpi
> you hit the salt and pepper before you satisfactorily recover the grain. For
> me its especially acute with Neopan 1600.
> 
> Here's an example:
> 
> http://www.photo.net/photodb/photo?photo_id=278487&size=lg
> 
> Mark Davison

To me it looks like too much unsharp mask. Or unsharp mask done twice.


Mark Rabiner

Portland, Oregon
USA

http://www.rabiner.cncoffice.com/

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