I'm jumping in without knowledge of preceeding messages on this thread
so forgive me if I'm repeating somone else's words.

I have this lens, even if I didn't use it (as the rest of my photo gear)
for a long time. My guess is that the simplicity of the lens design,
including only 5 optical elements vs. 7 or 8 in other 85 mm (non soft)
Pentax lenses and a low number of diaphragm blades, could have an effect
on the bokeh.

Ciao, Flavio

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
J. C. O'Connell
Sent: Tuesday, April 24, 2007 2:50 AM
To: 'Pentax-Discuss Mail List'
Subject: RE: More 85mm f2.0 smc-M bokeh - the photo

Ok, but I think the quality or
lack thereof is independent
of performance optimization
at any paricular focussing distance,
and since this is a "portrait"
type lens, it probably is focus
optimized at a closer distance
than inifinity. My hunch is they
sacrificed the bokeh quality to make it physically
a VERY small optical/mechanical design.
jco

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