[rollei_list] Re: changing lens formulas
- From: "Eric Goldstein" <egoldste@xxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Sun, 4 Nov 2007 20:44:49 -0500
Thank you, Carlos, you are truly a scholarly resource for matters Zeiss...
I could shoot myself for not being able to find that pdf. I keep
hoping that it will show up on an old HD someday... the paper was a
fascinating one...
Eric Goldstein
--
On 11/4/07, Carlos Manuel Freaza <cmfreaza@xxxxxxxxxxxx> wrote:
> Hi Eric:
> It was an article written by two Zeiss
> engineers with the tittle "Resolving Power and
> Contrast" and published in the "Zeiss Information
> Nº51", I have the URL for the only English version I
> could find online, however this translation has the
> text only, it does not show the photographs and
> diagrams you can find in the original article, these
> elements are very convincing to support the engineers
> point of view:
>
> http://www.pauck.de/archive/mailinglist/tech-3d/mhonarc/msg00544.html
>
> All the best
> Carlos
> --- Eric Goldstein <egoldste@xxxxxxxxx> escribió:
>
> > There is a famous Zeiss document which may account
> > for this. It used
> > to be up on the web but I have not found it for many
> > years. It was a
> > paper describing a pivotal decision for Zeiss... if
> > I am remembering
> > correctly, their research into end users revealed
> > that resolution in
> > excess of 40 lp/mm was seldom needed. As lenses
> > could be apotised to
> > favor either resolution or accutance/edge contrast,
> > and it was the
> > later which was the major factor in perceived
> > "sharpness," they were
> > moving in that direction. Just about every other
> > major manufacturer,
> > with the exception of Canon, followed.
> >
> > I used to have the doc as a pdf but have not been
> > able to find it...
> > perhaps Carlos knows of it and it's location...
> >
> >
> > Eric Goldstein
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