Sorry, can't answer your questions - but you made me
curious and I did a quick google search and came up
with the following site:
http://w1.541.telia.com/~u54105795/faqs_docs.html#lens
Which publishes the following online FAQ:
Photo FAQs and Documents
There is some interesting, albeit rather technical
information and an extensive section on lens testing.
Unfortunately, the link to 'zuiko-lens-reviews'
doesn't seem to work.
Ralph
Vancouver, BC
--- "Richard F. Man" <richard@xxxxxxxxxxxxxx> wrote:
> OK, I got interested and found a .ps file on the web
> for the USAF chart.
> How big is it suppose to print out? Or should I just
> buy one from one of
> the online sites?
>
> Is the "40x the focal length" the standard way of
> using it? How do you
> interpret the results?
>
> Thanks!
>
> >Johnny Johnson wrote ...
> >I didn't do a very exhaustive test. I used a
> tripod and shot a USAF 1951
> >resolution chart at a distance of 40 times the
> focal length on Velvia
> >film. The camera body was an OM-4 and in several
> cases I took two shots
> >with a given lens, one using the self timer and the
> other by cradling the
> >camera with my finger on the shutter release. I
> made one shot at f8 on
> >each lens and for several I shot at both wide open
> and completely stopped down.
> >...
>
> // richard http://www.imagecraft.com
> [ For technical support, please include all previous
> replies in your msgs. ]
>
>
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