Archived posting to the Leica Users Group, 1997/04/25

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Subject: Re: 35mm Summilux / collapsible lenses
From: Dan Cardish <dcardish@microtec.net>
Date: Fri, 25 Apr 1997 20:25:42 -0400

At 10:46 PM 25-04-97 +0200, Hendrik wrote:
>Hi, all of you!
>
>Reading LUG every day two questions coming more and more to my mind. 
>Maybe one of you can help me.
>1.) I have the  M35mm Summilux, which I like very much and my dealer ask 
>me for a chance to the aspherical. I looked at it and could believe how 
>big it is. And it covers up the finder too much, for my opion. Have 
>anyone of you compared the optical quality of this two lenses? Is there a 
>big different? Or should I spare the money for a 21mm or 135mm? (I use 
>the Cron 90mm, too)

[snip]

I own both the regular late model 35 summilux, and the first version
aspherical summilux.  I find from around f5.6 and beyond the two lenses are
almost identical.  At wider openings, the aspherical starts getting a bit
better in the contrast department, and is much better wide open.  At f2,
while the aspherical is a bit better, the regular summilux is still quite
good.   If you plan on doing a lot of shooting at f1.4, the aspherical is
the one to use, otherwise, keep your old lens and use the money to buy
another lens.

When I bought the aspherical, it was my plan to sell the other one, but I
find that the differance in quality is not great enough to overcome the
compactness and low weight of my old lens, so I kept it.

Dan C.