Archived posting to the Leica Users Group, 2000/08/30

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Subject: RE: [Leica] lens test
From: Paul Chefurka <>
Date: Wed, 30 Aug 2000 08:36:47 -0700

This test clearly indicates why bokeh is such a personal issue.  While I
agree that the APO clearly shows itself to be the sharper lens, to me it
also has the better bokeh - softer and more even.  The T-E bokeh shows the
bright hightlights sharply defined disks.

It's one of the most interesting comparo sites i've seen in recent times.


>-----Original Message-----
>From: Dan Honemann []
>Sent: Wednesday, August 30, 2000 2:12 AM
>Subject: RE: [Leica] lens test
>I understand why Dan is gun-shy about posting his latest test 
>shots to this
>list, and I'll respect his decision not to do so (and so won't 
>post the link
>myself), but I would encourage all who are interested to write 
>him and get
>it, because these are very carefully set-up shots (and numerous, at
>different f-stops) answering all of the criticisms of the last 
>tests and
>Here are my thoughts on the shots:
>I find the following tests to be most revealing, all at f2.8, 1200 dpi:
>Photo 3: Here the extra clarity/sharpness of the apo is evident in the
>detail of the tree bark, but I actually prefer the out of 
>focus area (bokeh)
>of the te.
>Photo 6: The 1200 dpi shows off the extra sharpness of the apo over the
>te--it is quite evident here in the grain structure of the 
>rocks (especially
>the large rock in foreground on the left).
>Photo 7: The better bokeh (slightly sharper out of focus area) 
>in the tree
>leaves of the te really stands out here in the left part of 
>the 1200 dpi
>image of the leaves.
>Conclusion: yikes!  Who can decide?  The apo is clearly sharper, but I
>(personally) much prefer the bokeh of the te.  A tough choice.
>I'd be very interested in hearing opinions/perceptions of others.  Many
>thanks to Dan C. for taking the time and trouble to conduct 
>these tests.
>Dan H.