In article , Floyd L. Davidson says...

But probably the most useful would be Richardson-Lucy
Deconvolutional sharpening. Using just standard default
filters (Gaussian and perhaps exponantial) for the point
spread function should work better than other sharpen
tools, but it would also be possible to develop a very
accurate point spread function for any given specific
lens (think of the Hubble Telescope), and that would be
very significantly better than other methods.

If the softness is caused by a particular camera-lens combination, is
there a way to determine this point spread function with for instance
some calibration steps, and then apply the right sharpening/
deconvolution?

I'm even wondering if this point spread function could be determined
from an image (without any previous camera/lens calibration), so that
the image processing software can choose the right sharpening algorithm
and parameters.
--
Alfred Molon

Olympus E-series DSLRs and micro 4/3 forum at
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