Archived posting to the Leica Users Group, 2001/12/28

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Subject: Re: [Leica] Not really OT: PS Unsharp Masking...
From: Mark Rabiner <mark@markrabiner.com>
Date: Fri, 28 Dec 2001 14:13:05 -0800
References: <B8523F33.6CF7%Mail@SlideOne.com>

John Straus wrote:
> 
> on 12/28/01 2:02 PM, Mark Rabiner at mark@markrabiner.com wrote:
> 
> >>> "Threshold"    always at zero. Only suckers play with this parameter says
> >>> Deke McClelland in the Photoshop Bible.
> >>
> >> Sure zero is fine if you want every pixel to be separated from the next like
> >> a grainy neg. In some cases it's needed and can give you that look, I find
> >> in most it is not. If you want to keep your low contrast areas looking
> >> smooth and not spotty the 3-5 range will almost always look better. Play
> >> around with it and use what looks good to you...
> >> --
> >> John
> >> Chicago, IL
> >
> >
> > You just set the "amount" lower. Does the same thing.
> > "Threshold" just confuses the issue. Leave it at zero.
> 
> Ok but the whole point of threshold is to not let any amount (%) of
> sharpening affect any group of pixels within that 3-5 range. If you keep
> your % lower you may not get enough sharpening effect where it's needed
> while trying to keeping your smooth areas in check. I may have to go back
> and test a few methods to see...
> --
> John
> Chicago, IL


According to what i remember Deke writing  "Threshold" is like a neutral
density filter.
Doesn't do nothing.
Course he could be wrong or i could have read him wrong. But i don't
think so.

Mark Rabiner
Portland, Oregon USA
http://www.markrabiner.com
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In reply to: Message from John Straus <Mail@SlideOne.com> (Re: [Leica] Not really OT: PS Unsharp Masking...)