Archived posting to the Leica Users Group, 1997/04/13

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Subject: Re: Nokton versus Summarit
From: "C.M. Fortunko" <fortunko@boulder.nist.gov>
Date: Sun, 13 Apr 1997 16:19:03 -0600

Erwin,

Would you call the Summarit a good portrait lens? Jonathan Eastland refers
to this lens as the little gem. Is he right?

Best regards,

Chris

ps. I am not a Unix user. 


At 08:57 PM 4/13/97 +0100, you wrote:
>I just completed a comparison between the Voigtlander Nokton 1,5/50 and 
>the Leitz Summarit 1.5/50. Overall the Nokton exhibits a bit more 
>contrast and has the ability to resolve slightly finer structures. At 
>full aperture both lenses have low contrast, which does not improve that 
>much when stopping down. Both reach their optimum at 5.6. The Summarit at 
>full aperture has a bit higher center sharpness, but is much worse in the 
>corners. The Nokton has a more even field. It is the suppression of halo 
>around strong light sources where the Nokton is the better lens. It is 
>significantly so. However in daylight situations the internal reflections 
>of the Summarit are better controlled. As can be seen when photographing 
>trees in backlight. The deep shadow areas of the Summarit are black, 
>where the Nokton is a little greyish. Overall however the Nokton is the 
>better lens and , surprisingly, has the same characteristics that makes 
>for the famous Leica glow. When one takes pictures with apertures from 
>2,8 to 5,6 both lenses are almost equal in performance and character. The 
>Nokton has a little more bite. 
>Very fine detail is not resolved and the contrast stays on the low side. 
>The pictures have a very nice smooth representation of the objects and 
>its various textures. There lack the brittleness and high contrast of 
>modern Leica lenses which brings out every detail with great clarity. The 
>reason why some people prefer the older type of image quality could be 
>the visual information overload which one gets with the newest lenses. 
>But this is my personal opinion and I need to reflect on this more. 
>Erwin Puts
>
>