Yep, I think the Lieberkuhn reflectors are only useful for short lens to
subject distances (inverse square law stuff), of course you could design
bigger ones with a longer focal length for the parabolic "dish". I'm just
wondering what one for the Zuiko 135/4.5 macro would look like !
...Wayne
> -----Original Message-----
> From: olympus <olympus-
> bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx> On
> Behalf Of Moose
> Sent: Wednesday, 17 April 2019 12:18 PM
> To: olympus@xxxxxxxxxxxxxxxxx
> Subject: Re: [OM] WANT: 3D printed drop-in filter holder for OM 350 and
250
> lenses
>
> On 4/16/2019 10:28 PM, Jan Steinman wrote:
> >> From: "Wayne Harridge" <wayne.harridge@xxxxxxxxxxxxxxxxxxx
> >>
> >> I also heard from the designer that he has made available a new stl
> >> file for the 55mm Lieberkuhn reflectors which should print ok.
> > Might be handy to have for the 90/2 and 50/2, but I think all the other
OM
> macro lenses used 49mm.
>
> I'm half way around the world from my bellows lenses, and the
> documentation is a bit obscure, but it seems you are right; 49 mm for the
> 20/2 and 38/2.8. I only bought a 49 mm Lieberkuhn reflector.
>
> I can't see where a Lieberkuhn reflector would bee of use on those longer
> lenses. It's designed to illuminate a very small field.
>
> Skeptical Moose
>
> --
> What if the Hokey Pokey *IS* what it's all about?
> --
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