[rollei_list] Re: Planar, Xenotar, Summicron

  • From: Eric Goldstein <egoldste@xxxxxxxxxxxxx>
  • To: <rollei_list@xxxxxxxxxxxxx>
  • Date: Thu, 26 May 2005 14:22:48 -0400

Jerry Lehrer:

> Now, i understand that some Aspheric surfaces are
> cast and not ground at all!


Virtually all of them in commercial use. The old Canon FD aspherics were an
exception and widely regarded as truly exceptional lenses...


Eric Goldstein

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