Thank you for the quick information. I thought it might be a manual
diaphragm setup, (no mechanics in the adapter at all).
___________________________________
John Hermanson
Camtech Photo Services, Inc.
21 South Lane, Huntington NY 11743
631-424-2121 | Olympus OM Service since 1977
http://www.zuiko.com | omtech1 AT verizon.net
Walters, Martin wrote:
> John:
> As a Pen newbie, here's my experience. OM lenses on the adapter are
> stopped down automatically. The stop down button no longer works, and
> the camera no longer controls the aperture (now, I haven't tried the
> shift on the Pen yet). So the viewfinder changes intensity (ie lighter -
> darker) as the lens aperture is changed. So, you'll get the brightest
> viewfinder for focussing wide open. Once focussed, the lens aperture is
> set manually.
>
> I have an FV, so there's no internal meter. I thus use classic f stops
> and shutter speed. The meter exposure numbers on the FT can only be used
> with "FT" versions of the Pen lenses, which have both the numbers and
> the f stops (on the other side) on the aperture ring. There must be an
> equivalence between the two scales, but I don't know it is the same for
> all lenses. I think I read something about this somewhere. The clip on
> meter, I believe, uses f stops not the numbers.
>
> As I learned from others on the list, pulling out and turning the
> aperture ring allows you to use either the meter numbers or the f stops.
> When I did this on my two FT lenses, I didn't make sure that the
> aperture ring had engaged. Result: the aperture did not change as the
> ring was turned and I had a lot of poorly exposed photos. Took me a
> little while to figure out that the lenses were not broken....
>
> Martin
>
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