Re: lens 'recipes'


<murrayatuptowngallery@xxxxxxxxx> wrote

snip

I think I
mentioned in a prior post trying to evolve from Neander-Optics (N.O.)
to Cro-Magno-Optics (C.M.O).

Cro-Magnon (not Cro-Magno) people belonged to the genus Homo Sapiens,
just as we do (unlike the Neanderthalians).

They were not different from us. About 30,000 years older that's all.

Putting apart your lens assuming that you can do it is one thing.
Especially w/o any damage. Re-assembling it is quite another.

Why would you want to mess up with a Petzval (portrait) lens anyway?

Or do you want to reconstitute one with surplus components?

If you try with some diligence you'll probably find the formulation thereof
in the optical literature.

Thus "reverse engineering" in this instance is a rather moot proposition.

Also try to get your hands on Rudolf Kingslake's History of the Photographic
Lens

http://www.amazon.com/History-Photographic-Lens-Rudolf-Kingslake/dp/0124086403

Petzval type lenses are pretty old (about 1840).

http://en.wikipedia.org/wiki/Jozef_Maximili%C3%A1n_Petzval

http://www.math.uni-hamburg.de/spag/ign/events/pdf/wf-petzv.pdf

http://de.wikipedia.org/wiki/Josef_Maximilian_Petzval



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