Archived posting to the Leica Users Group, 2000/08/22

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Subject: Re: [Leica] Summilux-R 50mm f/1.4 or Summicron-R 50mm f/2?
From: Pascal <>
Date: Tue, 22 Aug 2000 13:05:46 +0200

On 22-08-2000 09:34 Terry Sham wrote:

>The different between f/1.4 and f/2 is not important for me. But, which one
>have better optical quality?

The one million dollar question ;-)

My experience is limited to the current version of both Summicron-R 
50/2.0 and Summilux-R 50/1.4 (E60).

For all practical purposes, I do not detect a difference in output 
quality. The new Summilux is an outstanding lens and an improvement on 
the older E55 version which was a bit lacking in the image field compared 
to the center.
I would consider the current Summilux every much the equal of the 
Summicron, plus an additional f/1.4 stop of course.

Both lenses are top quality.

The choice between the two of them has to be based on your photographic 
needs (do you need the extra f/1.4 stop?) and your budget (the Summilux 
is more than double the price of the Summicron). Of course, the Summilux 
is a little bigger and has some more weight, but that is still very 
reasonable compared to the Summicron. Also, consider the fact that a lens 
with a max stop of 1.4 will give you a brighter viewfinder which makes it 
easier to focus precisely.

Whichever you choose, you can't go wrong.

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