No, because there are optical limitations (and compromises) at wide open on
most lenses (OK, that sounded good -- just don't ask me to explain it).
"Best" is somewhere in the middle on most lenses.
For example, stealing directly from Gary Reese's lens test page:
28mm f/2.8 Zuiko (multi-coated)
OM-4T with mirror and aperture prefire; same lens as OM-1 based test
Aperture Center Corner
f/2.8 B- C+
f/4 B+ B-
f/5.6 A- A-
f/8 A- A-
f/11 B+ B+
f/16 B B
f/22 B B
Notes: Moderately low contrast images at f/2.8, f/16 and f/22; moderate
contrast images at f/4 to f/11.
To summarize, improved contrast f/4 to f/11
Highest grades at f/5.6 and f/8
Actually, when you consider this lens can be easily found for around $60,
this reinforces what a great value it is.
Tom
>
> So Tom, Does this mean that I would get more critically sharp focus at
> f/2, with the trade-off being reduced DOF?
>
> Uh-oh ... did I just have a "grasshopper" moment? :)
>
> Jamie
>
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