Archived posting to the Leica Users Group, 2003/06/17

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Subject: Re: [Leica] Ortho-chromatic film
From: Jerry Lehrer <jerryleh@pacbell.net>
Date: Tue, 17 Jun 2003 18:47:59 -0700
References: <20030617224343.29472.qmail@web10508.mail.yahoo.com> <3EEFA0CA.273EBE57@pacbell.net> <3EEFC342.4393EFAB@earthlink.net>

Slobo

If you think that's the case, I say, "Don't quit your day job".

Jerry

Slobodan Dimitrov wrote:

> Wanta bet! I do that all the time, that's why people hire me.
> Which why when I figure this one out, I'll turn a buck on it.
> Slobodan Dimitrov
>
> Jerry Lehrer wrote:
> >
> > Pat
> >
> > I am a highly qualified photographer, and I know that you
> > can't get something for nothing.
> >
> > I do not own a scanner of any kind.
> >
> > Jerry
> >
> > Patrick Jelliffe wrote:
> >
> > > Jerry,
> > >
> > > With all due respect, if you don't even know how to
> > > scan your old chromes, how can you make a comment like
> > > that?
> > >
> > > Regards,
> > >
> > > Patrick
> > >
> > > --- Jerry Lehrer <jerryleh@pacbell.net> wrote:
> > > > Martin
> > > >
> > > > You are correct.  I cannot understand how a
> > > > sophisticated,
> > > > experienced photographer could ask that question.
> > > >
> > > > Jerry
> > > >
> > > > Martin Howard wrote:
> > > >
> > > > > Slobodan Dimitrov wrote:
> > > > >
> > > > > > Anyone know what adjustments in PS, or any other
> > > > software, can be used
> > > > > > to turn an image taken with ortho film into one
> > > > that simulates the
> > > > > > tonality of pan-chromatic emulsions?
> > > > >
> > > > > If I understand correctly, orthochromatic film
> > > > captures less spectral
> > > > > range than does panchromatic film.  Since PS can
> > > > only work with what
> > > > > you give it, short of "inventing" new pixels, I
> > > > don't see how ANY
> > > > > manipulations in PS could turn orthochromatic
> > > > images into panchromatic
> > > > > images, because you don't know the reflective
> > > > properties of the objects
> > > > > in the scene with regard to the range of
> > > > frequencies that the ortho
> > > > > hasn't captured.  While you might be able to make
> > > > some educated
> > > > > guesses, and locally adjust contrast accordlingly,
> > > > I doubt you'd be
> > > > > able to results which are "the same".
> > > > >
> > > > > M.
> > > > >
> > > > > --
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> > > >
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Replies: Reply from Slobodan Dimitrov <sld@earthlink.net> (Re: [Leica] Ortho-chromatic film)
In reply to: Message from Patrick Jelliffe <pbjbike@yahoo.com> (Re: [Leica] Ortho-chromatic film)
Message from Jerry Lehrer <jerryleh@pacbell.net> (Re: [Leica] Ortho-chromatic film)
Message from Slobodan Dimitrov <sld@earthlink.net> (Re: [Leica] Ortho-chromatic film)