[Leica] Re: Summaron

[sethrosner at nycap.rr.com (Seth Rosner)]

Larry, I'm afraid this is just wrong. The only similarities between the 2,8 
and 3,5 Summarons is that both have six glasses (elements) and both were 
produced by Leitz.  :-)   The contrast difference is very significant. Put 
their images side-by-side and there is no comparison. The degree of 
improvement lessens slightly as the lenses are stopped down. Not the least 
of the reasons for the dramatic improvement in optical performance of the 
2,8 is the introduction of Leitz' new lanthanum glass (LaK9) that so 
dramatically improved the contrast and resolution across the image of the 
1956 Rigid and DR Summicrons. I understand Mark's reasons for staying with 
the 3,5 - it produces images he likes and is very economical - but candidly 
the 3,5 is only a collector's lens today.

Respectfully,

Seth


----- Original Message ----- 
From: "Lawrence Zeitlin" <lrzeitlin@optonline.net>
To: <lug@leica-users.org>
Cc: "Lawrence Zeitlin" <lrzeitlin@optonline.net>
Sent: Wednesday, December 10, 2008 6:54 PM
Subject: [Leica] Re: Summaron


>
> On Dec 10, 2008, at 5:51 PM, Len wrote:
>
>> After you
>> mentioned the 2.8 Summaron I went searching the web for it. Yup it's
>> gotten up there in price.
>
>
> Len,
>
> You might try looking for an f3.5 Summaron. As I understand it, the
> F2.8 Summaron is identical to the F3.5 model with the diaphragm
> adjusted to open half a stop wider. The price might be a bit lower if
> you don't need that extra half stop. I have one of these with the
> eyeglass finder for the M3 and it has been quite satisfactory.
>
> Larry Z
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information


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