Archived posting to the Leica Users Group, 1999/08/31

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Subject: [Leica] RE: I've seen teh Bokeh!!!
From: Simon Stevens <simon@wizard.net>
Date: Tue, 31 Aug 1999 11:07:30 -0400

OK, here is an unscientific theory for your comments. I agree that there
is a special quality about leica lenses, but I'm not sure that we need
to be quite so metaphysical in finding its source. Based on my
observations, the Leica look is mostly just a combination of high
edge-to-edge resolution coupled with slightly lower than average
contrast. This gives those wonderfully smooth mid tones that I love so
much and which you so rarely see produced by the small 35mm negatives.
This smooth tonal gradation  in turn gives the "3D look" that we rave
about and I'm sure it's a positive contribitor to a nice bokeh also.

Interestingly, I have seen bench test results (I don't recall the
magazine, sorry) that slammed Leica lenses for having markedly lower
contrast than some more inexpensive lenses - Nikon, Canon, Pentax, etc.
I think that this is a clue to the different marketing strategies and
design philosophies of the mass market brands versus Leica. Cheaper
lenses can be made apparently sharper by increasing their contrast, and
this in turn can make them seem better in a test report than they in
fact are.

Judging by the comments I read on the LUG,  Leica users care more about
the results on film and personally, I couldn't care less what some
reviewer  with his MTF machine says - cheaper lenses look too contrasty
to me. They all look like prints that are printed a grade too high.

If you have photoshop or a similar program you can experiment to see
what I mean. Take a slightly unsharp image and increase its contrast and
voila! it looks sharper. Now play with a portrait image's contrast. As
long as the image is sharp a slightly lower contrast is generally more
flattering. Go in the other direction and increase contrast  a bit and
you start to lose midtones and block up areas. Soon you have the look
familiar to Nikon users - razor sharp edge definition, but much lost
information in between.

I suspect that Leica's approach is an expensive one. Without the high
resolution lower contrast images would look awful. But done right, and
to me Leica does it right, the results bring out the best in 35mm.
Still, as I say, these comments are subjective and I'm sure the editors
of XYZ Advertising-Supported Camera Magazine would disagree!

Simon Stevens
Camera Craftsman
(703) 548-7548
http://www.camera-craftsman.com