I read the 'bokeh' PDF file and agree, there are aspects of bokeh that
cannot be explained by iris shape alone. Most lenses from all manufacturers
have similar irises yet produce dissimilar out-of-focus characteristics.
The article didn't discuss these factors at all. However it was very
revealing in specifically showing how iris shape *does* affect highlight
patterns in out-of-focus images. I've observed similar characteristics in
P*S cameras which have 3- or 4-blade diaphragms.
Lex
===
From: "Olaf Greve" <ogreve@xxxxxxxxxxx>
And, as you said, there's more to bokeh, good or otherwise, than the
element of iris-shaped flare or highlight patterns. So much depends on
the
background itself.
Yes. Unfortunately these topics are not covered at all in the document I
provided the link to. But indeed, the "bokeh-killer-test" is a about as
difficult a situation as one can bestow on a lens...
Cheerio!
Olafo
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