Archived posting to the Leica Users Group, 1998/01/03

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Subject: Re: [Leica] Summarit/ 90 M Summicron at f 2
From: Alfred Breull <>
Date: Sat, 3 Jan 1998 21:59:44 +0100

Maybe I'm just lucky - my LTM Summarit, s/n 1.055.369, separates 
the hairs of eyebrows or eyelashes at 1.5 m (5 ft) and f 2.0.
That's approximately the same (or more) what the 90 M Summicron 
does at 2.50 m (~8 ft) and wide open.  Additionally, both, the
Summarit and the 90 M Summicron, show a rather soft out-of-focus
rendition. These were the conditions, on which I described the 
90 M Summicrons' wide open performances. And, I think, that my
comparison was not unfair. But, I agree also, that the 50 mm 
Summitars or Summicrons are more sharp at f 2.0 than the 
Summarit, and that they separate more shadow details, specially 
under low light conditions. And I agree also, that the 90 M 
Summicrons manage high contrasts wide open far better than 
the Summarit at all f stops. But, maybe all that was a little
too much detailed for the original question ?

- -----------------------------------------------------------
At 10:25 03.01.1998 -0500, Marc J Small wrote:
>The performance of a Summarit at f/1.5 and either version of the 90mm
>Summicron at f/2 is quite a bit different, the Summicron being a stalwart
>producer of surprisingly sharp pictures wide-open, unlike the Summarit.