[Leica] Re: LUG Digest, Vol 34, Issue 231: ASPH vs. Aspherical

[don.dory at gmail.com (Don Dory)]

Frank,
They inferred that they were grinding all their lenses.  Your specific
question did not get asked, but they gnomes did spend a fair bit of time
talking about introducing new CNC derived equipment to reduce variability in
components.

On 3/13/07, Frank Dernie <Frank.Dernie@btinternet.com> wrote:
>
> You probably can not answer this :-) but are the lenses which were
> designed with the hot pressed ASPH elements such as the 21, 24, 35 f2
> and second 35 f1.4 still hot pressed and the later lenses with larger
> diameter asph elements ground, or have they changed the manufacturing
> method of the asph elements in these as well?
> Frank
>
> On 13 Mar, 2007, at 03:23, Mark Rabiner wrote:
>
> > On 3/12/07 11:05 PM, "Don Dory" <don.dory@gmail.com> typed:
> >
> >> Mark,
> >> It was a variant of computer controlled grinding.  Better control
> >> and much
> >> tighter tolerances.
> >>
> >> Enjoy
> >>
> >> On 3/12/07, Mark Rabiner <mark@rabinergroup.com> wrote:
> >
> > Yep you were standing to the right of me.
> >>>
> >>> But I seem to recall a discussion at the Leica factory a few
> >>> months back
> >>> about 5 people standing around with Christian Erhardt in a
> >>> hallway, could
> >>> have been a jet lagged hallucination.
> >>>
> >>> Mark Rabiner
> >>> 8A/109s
> >>> New York, NY
> >>>
> >>> markrabiner.com
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> Leica Users Group.
> >>> See http://leica-users.org/mailman/listinfo/lug for more information
> >>>
> >>
> >>
> >
> >
> > Mark Rabiner
> > 8A/109s
> > New York, NY
> >
> > markrabiner.com
> >
> >
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>



-- 
Don
don.dory@gmail.com