You run the risk of vignetting with the filter further from the lens. If
doing it this way (seems to me an excellent way to get around the lack of OM
49-72 rings) you may want to use 49-62 and 62-82 rather than 62-72. That
way you could use the same filters on the Tamron SP 17/3.5 which might be a
fair substitute for the Zuiko 18/3.5 which gets us back to the starting
point!
Piers
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Gordon J. Ross
Sent: 26 March 2004 09:56
To: olympus@xxxxxxxxxx
Subject: [OM] Re: 18/3.5
Hi:
Could you buy rwo adjoining stepup rings which would increase the distance
between the filter and lens?
Gord
----- Original Message -----
From: "Jim Couch" > You are right Moose, but I have yet to find one that is
actually thinner
> than the Olympus. Most are muchy thicker, which would probably lead to
> vignetting with most filters.
>
> Jim Couch
>
> Moose wrote:
>
> >The Oly one is 7.5mm deep from the front of the lens filter thread
> >flange to front of the adapter. Anything thinner will cause
> >interference between the filter and the protruding front element of the
lens.
> >
> >Moose
> >
> >jamesbcouch@xxxxxxxxxxxxx wrote:
> >
> >
> >
> >>These are indeed hard to find. I haven't actually tried it, but i
> >>don't see any reason why a thin, good quality 49-72 step-up ring
> >>(like a B+W) would not work.
> >>
> >>Jim Couch
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