Dave Bulger wrote:
>
> OM Gurus,
>
> After about 25 years of avid shooting, I'm just now getting into the more
> technical aspects of this hobby/obsession/trade (i.e. I've just learned the
> zone system) and I'm seeing more & more references to the fact that a lens is
> not necessarily at it's sharpest stopped down to it's minimum aperture. This
> is gonna bug me until I know exactly what aperture each of my lenses is
> sharpest at.
>
> I've checked the FAQ and various other sources on the net to no avail.
> Anyone have a source for this info? I have a nasty feeling someone is gonna
> refer me to the unattainable OM-System Lens Handbook...
>
> TIA!
>
> Dave
>
Dave;
The OM handbook will not help.
Check out Gary Reeses' tests he's recently done and the tests on R Lees
( think) page.
Also, rule of thumb: "A lens will be at its' sharpest when stopped down
2 to 4 stops from wide open." So an f/2 lens could be expected to be
sharpes at f/4 and f/5.6 and f/8.
George
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