If you have access to a lathe you can easily modify a generic 49-->72mm step up
ring to work with the zuiko 18/3.5. Depending on the depth of the step up ring
you may need to do 2 stages, e.g. modify a 49-->55mm and add a 55-->72mm so
that the filter glass doesn't make contact with the front element of the lens.
...Wayne
> -----Original Message-----
> From: olympus <olympus-
> bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx> On
> Behalf Of William L Barber via olympus
> Sent: Monday, 8 July 2019 8:45 PM
> To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
> Cc: William L Barber <nsurit@xxxxxxx>
> Subject: Re: [OM] 49- 72mm Olympus Step up ring spotted
>
> An important consideration if one needs this step-up ring is that you need
> the one made by Olympus as those made by others, in my experience, have
> threads which are too thick and won t work with the Olympus lens. Bill Still
> Shooting Film Sometimes Barber
>
> > On Jul 8, 2019, at 3:41 AM, Frank <wijsmuller@xxxxxxxxx> wrote:
> >
> > Actually it is to attach filters to the 18mm 3.5
> >
> <https://www.mir.com.my/rb/photography/hardwares/classics/olympusom
> 1n2
> > /shared/zuiko/htmls/18mm.htm> , which has a bulbous front lens
> > preventing the use of filters without the
> > 49->72mm adapter.
> >
> >
> > *Frank *
> >
> >
> > Op ma 8 jul. 2019 om 07:45 schreef Mark Calzaretta
> <om4ti@xxxxxxxxxxxxxxxx>:
> >
> >> That ring allows filters to be put on the 16MM Zuiko lens
> >>
> >> 49mm filters vignette, even if they are of a thin profile
> >>
> >> Sent: Monday, July 08, 2019 at 1:11 AM
> >> From: "tOM Trottier" <tom@xxxxxxxxxxxxx>
> >> To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
> >> Subject: Re: [OM] 49- 72mm Olympus Step up ring spotted
> >> I know 49mm very well. What is the 72mm significance?
> >> tom
> >> On 7 Jul 2019 at 17:47 re:"[OM] 49- 72mm Olympus Step up ring ..."
> >> William L Barber via olympus(William L Barber via olympus
> >> <olympus@xxxxxxxxxxxxxxxxx>) wrote:
> >>> Don t now if anyone cares anymore, however B&H has one in their Used
> >> dept
> >>> currently for $14.95. A great buy if you need one and know what it
> >>> is
> >> used
> >>> for in the OM system. Bill Barber
> >> --
> >> Absum! -- Quidquid latine dictum sit altum viditur.
> >> tOM Trottier +1 613 860-6633
> >> tOM@xxxxxxxxxxxxx
> >> 601-567 Cambridge ST. S,
> >> Ottawa ON K1S 4J5 Canada
> >> Skype:Abacurial
> >> [1]http://TomTrottier.com
> >> P Est-ce c'est necessaire d'imprimer ce courriel ?
> >> Do you really need to print this email?
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> >>
> >> 1. http://TomTrottier.com/
> >> 2. http://lists.thomasclausen.net/mailman/listinfo/olympus
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