Archived posting to the Leica Users Group, 1997/05/16

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Subject: Re: 90mm Summicron Question
From: Stephen <cameras@jetlink.net>
Date: Fri, 16 May 1997 16:45:20 -0700

seungmin@luxmail.luxcom.com wrote:
> 
>      Hi,
> 
>       It is my understanding that there are some German made 90 M-Rokkor
>      for CLE.  Am I wrong?
> 
>      Regards,
>      David

So far as I know, only Minolta M Rokkors were actually made for and sold
with the CLE.  

What's confusing is that Leitz made a 90/4 Rokkor labled "M-Rokkor" for
the CL years earlier.  These can be spotted by the 5.5 series filters
and the sharp angle CL type focusing cam.   Minolta then took up the
"M-Rokkor" designation for the new series of 28/40/90 lenses for the CLE
years later.

Stephen Gandy


> Gerard Captijn wrote:
> >
> 
> > The 90mmf/4 Rokkor was a lens produced by Leitz Wetzlar. Although its
> > optical construction was identical to todays Elmarit-M, its performance is
> > comparable to the   Tele-Elmarit-M.
> >
> 
> The 90/4 Rokkor M for the CLE is a different lens than the 90/4 for the
> CL.  While both are 4 element and similar, the diagrams which I have
> seem to show slightly different formulas through different element
> curvatures.  The differences which I am aware of are as follows:
>    90/4 Elmar for CL 90/4 M Rokkor for CLE
> 
> manufacture    Germany   "Made in Japan"
> cam    sharp curve  standard M cam
> filters    Series 5.5  40.5
> coating    single   multi
> lable    Elmar C   "M-Rokkor"
> 
> 
> Stephen Gandy