Moose, I have received some enlightenment, as well. Not scientific,
just from experimentation. My only long lens is a Leica Telyt-R 250/4
from 1980, along with an extender from 1982, well before the current
Leica offerings. I have tried to get some good images at wide lens
openings, as recommended by some excellent photographers, but I have
been underwhelmed with the results. Since I'm using a tripod, shutter
speed is not an important issue, and my Fuji X-E1 offers variable ISO,
as well.
With all of this to explore, I began to close down the lens, and examine
the resulting images. What I found surprised me. The best images were
made with the lens stopped down to f/22. Whether it is the increased
DoF that makes them look better, or simply a sweet spot, as you implied
in your case, I can't say. I continue to try for more images as the
opportunities permit. Just sayin', it works.
Jim Nichols
Tullahoma, TN USA
On 1/29/2016 2:44 PM, Moose wrote:
(Yes, Chuck and Mike, I know f11 should lose sharpness to
diffraction, and I know deconvolution sharpening shouldn't bring it
back. And yet experience flies in the face of theory, and that's the
sweet spot for this sensor/lens combination. ;-) )
Erroneous Moose
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