It's not that f/22 is too soft for your lenses, f/22 is too soft for
your sensor. Diffraction blurring eventually causes the Airy disc to be
larger than a pixel or film grain which is the smallest image data you
can resolve. f/22 on a medium format DSLR with its very large pixels
would be just fine. Not so fine on an APS-C size or 4/3 sensor with
very small pixels.
Chuck Norcutt
On 6/1/2013 3:09 PM, Mike Lazzari wrote:
>> Tough to choose between f16 and f32; would depend on the particular
>> subject and intent. F45 was just too
>> soft. I never tried it again, but I knew exactly why.
> Even f22 with my digital lenses is too soft for me even with the DOF
> gain but YMMV as you say. Haven't hung the 135 macro on the EM5 yet. I
> should give it a walkabout. At the time they etched that f45 on the
> 135mm there wasn't any stacking software.
>
> Mike
>
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