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Groups > comp.sys.mac.apps > #8837

Re: Scanner software for Mac

From Paul Förster <paul.foerster@gmx.net>
Newsgroups comp.sys.mac.apps
Subject Re: Scanner software for Mac
Date 2012-04-02 19:42 +0200
Message-ID <9tu6opFequU1@mid.individual.net> (permalink)
References (1 earlier) <4f71ab0f$0$1656$c3e8da3$f017e9df@news.astraweb.com> <9tdq8cFguU1@mid.individual.net> <isw-2898C6.10092227032012@[216.168.3.50]> <9tr2avFibnU1@mid.individual.net> <isw-12B23E.22412101042012@[216.168.3.50]>

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Hi Isaac,

> My sense of it is that a scanner's depth of field is quite sufficient to
> deal with a modest amount of film warpage insofar as focus is concerned.
> My Microtek scanner's transparency holder could accommodate both
> positives (slides) and negatives, but because of the way the holder was
> built, the two were held at different distances from the imaging
> mechanism. I tried both positions, and could not see any difference in
> sharpness even at 4800 dpi. I suppose it's possible that your technique
> would reduce geometric distortion (by a very little bit), but I didn't
> notice it being a problem. Plus, every extra piece of glass means two
> more surfaces to cause reflections and collect dust ...

... I found a huge gradient in sharpness changing with warpage. Putting 
an extra glass layer on top of any transparency, no matter whether 
negative or positive, improves the situation here a lot. But then, the 
warpage of my old negatives is really really bad. Imagine a third of a 
pipe. They're rounded up to that point, length-wise. So I don't just 
get steady sharpness thoughout the whole image but a huge geometry 
correction.
-- 
cul8er

Paul
paul.foerster@gmx.net

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Thread

Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-03-27 11:59 +0200
  Re: Scanner software for Mac Warren Oates <warren.oates@gmail.com> - 2012-03-27 07:57 -0400
    Re: Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-03-27 14:31 +0200
      Re: Scanner software for Mac gtr <xxx@yyy.zzz> - 2012-03-27 07:20 -0700
        Re: Scanner software for Mac jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2012-03-28 05:28 +1300
          Re: Scanner software for Mac Walter Bushell <proto@panix.com> - 2012-03-27 12:52 -0400
            Re: Scanner software for Mac jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2012-03-28 06:42 +1300
              Re: Scanner software for Mac Warren Oates <warren.oates@gmail.com> - 2012-03-27 14:44 -0400
                Re: Scanner software for Mac jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2012-03-28 08:17 +1300
                Re: Scanner software for Mac gtr <xxx@yyy.zzz> - 2012-03-27 13:04 -0700
                Re: Scanner software for Mac Erilar <drache@chibardun.netinvalid> - 2012-03-27 21:01 +0000
                Re: Scanner software for Mac jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2012-03-29 02:28 +1300
                Re: Scanner software for Mac Warren Oates <warren.oates@gmail.com> - 2012-03-28 09:59 -0400
                Re: Scanner software for Mac jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2012-03-29 05:16 +1300
                Re: Scanner software for Mac Fred Moore <fmoore@gcfn.org> - 2012-03-28 11:00 -0400
                Re: Scanner software for Mac jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2012-03-29 05:16 +1300
              Re: Scanner software for Mac Walter Bushell <proto@panix.com> - 2012-03-30 23:40 -0400
            Re: Scanner software for Mac dorayme <dorayme@optusnet.com.au> - 2012-03-28 10:16 +1100
        Re: Scanner software for Mac Ed Anson <EdAnson@comcast.net> - 2012-03-27 18:07 -0400
          Re: Scanner software for Mac gtr <xxx@yyy.zzz> - 2012-03-27 15:14 -0700
          Re: Scanner software for Mac Wes Groleau <Groleau+news@FreeShell.org> - 2012-03-27 22:40 -0400
      Re: Scanner software for Mac isw <isw@witzend.com> - 2012-03-27 10:09 -0700
        Re: Scanner software for Mac dorayme <dorayme@optusnet.com.au> - 2012-03-28 10:26 +1100
        Re: Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-04-01 15:08 +0200
          Re: Scanner software for Mac Erilar <drache@chibardun.netinvalid> - 2012-04-01 20:29 +0000
            Re: Scanner software for Mac isw <isw@witzend.com> - 2012-04-01 23:15 -0700
              Re: Scanner software for Mac "John Varela" <newlamps@verizon.net> - 2012-04-02 17:45 +0000
                Re: Scanner software for Mac Erilar <drache@chibardun.netinvalid> - 2012-04-03 19:55 +0000
                Re: Scanner software for Mac Michael Siemon <mlsiemon@sonic.net> - 2012-04-03 15:14 -0700
          Re: Scanner software for Mac isw <isw@witzend.com> - 2012-04-01 22:41 -0700
            Re: Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-04-02 19:42 +0200
      Re: Scanner software for Mac Wes Groleau <Groleau+news@FreeShell.org> - 2012-03-27 22:11 -0400
        Re: Scanner software for Mac dorayme <dorayme@optusnet.com.au> - 2012-03-28 14:20 +1100
          Re: Scanner software for Mac Wes Groleau <Groleau+news@FreeShell.org> - 2012-03-28 20:56 -0400
      Re: Scanner software for Mac "John Varela" <newlamps@verizon.net> - 2012-04-02 17:21 +0000
        Re: Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-04-02 19:50 +0200
          Re: Scanner software for Mac "John Varela" <newlamps@verizon.net> - 2012-04-04 02:11 +0000
            Re: Scanner software for Mac dorayme <dorayme@optusnet.com.au> - 2012-04-04 13:37 +1000
              Re: Scanner software for Mac isw <isw@witzend.com> - 2012-04-03 21:01 -0700
                Re: Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-04-05 15:50 +0200
                Re: Scanner software for Mac isw <isw@witzend.com> - 2012-04-05 21:23 -0700
                Re: Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-04-08 10:15 +0200
            Re: Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-04-05 08:51 +0200
  Re: Scanner software for Mac Wes Groleau <Groleau+news@FreeShell.org> - 2012-03-27 22:00 -0400
    Re: Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-04-01 15:09 +0200
      Re: Scanner software for Mac Paul Sture <paul@sture.ch> - 2012-04-01 16:14 +0200
      Re: Scanner software for Mac Wes Groleau <Groleau+news@FreeShell.org> - 2012-04-02 00:57 -0400
        Re: Scanner software for Mac Paul Förster <paul.foerster@gmx.net> - 2012-04-02 19:35 +0200
  Re: Scanner software for Mac Howard.not@home.com (Howard) - 2012-03-28 22:03 +0100
    Re: Scanner software for Mac Michael Vilain <vilain@NOspamcop.net> - 2012-03-28 16:26 -0700
      Re: Scanner software for Mac Howard.not@home.com (Howard) - 2012-03-30 00:22 +0100

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