Hi John,
You are right that was me mentioned the two different versions of Zuiko 35-105.
But
my old version was with S/N 1077xx - have a flat look rear element, the newer
one I
have is S/N 5147xx has convex look rear element.
As I remember the old one does not darken when stop down at 35mm end, the newer
version does.
Just tested the newer 35-105 setting at F8, point to a plain wall. My OM-1n, 2n
and 4
all read 1/2s (with the 2n read very little below 1/2s, I think it was less
than 1/3
stop). There is no different between 35 to 105mm on my OM4.
C.H.Ling
----- Original Message -----
From: "John A. Lind" <jlind@xxxxxxxxxxx>
> I believe there are at least two internal designs on the 35-105. Other
> differences related to aperture and zooming were observed on the list a few
> months ago (some of the postings from C.H. Ling ??). I was able to
> determine that mine is apparently one of the newer ones (S/N 106###). The
> image doesn't normally darken moving from 35mm to 105mm, nor does the
> metering shift much. When I'm using the 35-105 (my only zoom) the camera
> is usually in TTL Auto and I don't worry about it. Having used it with a
> good amount of Kodachrome 64, exposure through it has been consistently
> excellent under a wide variety of conditions. Thus, there's never been a
> reason to worry about it.
>
> Remember that the lens is wide open when metering in manual mode. As you
> set the aperture a lever in the lens moves against another one on the body
> to bias the metering. Unless this lever moves slightly as you zoom with
> apertures tighter than f/3.5 (to correct the biasing), the metered reading
> should change as the lens is still shifting from f/3.5 to f/4.5, a total of
> 2/3rd f-stops.
>
> -- John
>
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|