Archived posting to the Leica Users Group, 1997/11/22

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Subject: The pictures
From: Erwin Puts <>
Date: Sat, 22 Nov 1997 17:36:59 +0100

I downloaded the two pictures from Dan (and deleted them immediatelely
after the analysis) and noted two things.
In Photoshop I superimposed both pictures and noted that the distance from
the corner of the wooden bench to the white house in the backfround ws
different. So both pictures are taken from a different angle and
I als noted that the Summilux picture is very unsharp in the background.
(the window details are clearly visible in the DR picture and not at all in
the Summicox picture. In general the background of the Summilux looks much
softer and vaguer than the DR. If you however take a look at the foliage
behind the model, you will see the same shapes and outlines. The details in
the trunk of the tree are also the same in shape and structure. So the only
difference between these two pictures is a difference in sharpness in the
far background and a different location of the sharpness area. Witness the
different location where the unsharpness zone starts behind the bench.
These pictures then, in my view, do not prove the existance of boke. My
first impression (given the zonal diffenence and the very unsharp
background) than the apertures are not the same.