[rollei_list] Re: 'Old' Zeiss glass question
- From: Jerry Lehrer <jerryleh@xxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Wed, 26 Apr 2006 15:07:48 -0700
Jeffery,
Heavens, no! I am just a poor retired engineer.
Actually, I prefer the image quality of the pre-Asph.
Summilux.
Jerry
Jeffery Smith wrote:
> Jerry, is your 50 1.4 'lux the new asph. model?
>
> At 03:37 PM 4/26/2006, you wrote:
> >Jeffery,,
> >
> >I can accept your rather strange assertion only because I do not
> >know the extent of your "entire collection". It may e like mine;
> >dozens of lenses, but only ONE 50mm lens. A f1.4 Summilux.
> >
> >Jerry
> >
> >Jeffery Smith wrote:
> >
> > > I'm still amazed that the best overall performing lens in my entire
> > > collection is a 50/3.5 CV Heliar that was from a design waaaaay back
> > > in the early 20th century. It seems to have been based on an earlier
> > > design of the Tessar. Very simple, but very good optically.
> > >
> > > Jeffery
> > >
> > > At 03:14 PM 4/26/2006, Richard wrote:
> > > > As far as design goes, my designer friend, Brian Caldwell, tells
> > > > me that many of the older Zeiss designs are about as good as they
> > > > can get. Setting these up in a lens optimization program
> > > > demonstrates that even changes in glass types will not much improve
> > > > them. Old Tessars and Protars fall into this category. This is not
> > > > to say that they are wonderful lenses, only that Zeiss pretty well
> > > > exhausted the capabilities early on.
> > >
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