I have adapted an OSCILLO-PARAGON 1:0.7X 75mm f1.9 to Sony NEX and also to
m4/3 using an EOS-NEX and EOS-m4/3 helical focussing adapters . The EOS
adapters seem to be the only adapters I could find to allow the
OSCILLO-PARAGON to achieve infinity focus. This adaption still required
machining off some of the excess lens mount thread (removed about 4-5mm from
memory) which is 50mmx0.75mm, the same thread pitch as a filter ring. I
epoxied a 55mm -> 50mm step down ring into the EOS end of the helical
focussing mounts which allows me to swap the lens between my Sony A7 and
various m4/3 bodies. The OSCILLO-PARAGON is interesting as it has negative
field curvature to cope with the old style convex oscilloscope screens and
has coverage for Polaroid pack film (4.75" x 3.5" ?) so it means the centre
of the image is reasonably sharp put the extremities of the image are still
soft even when stopped down to f16.
I'll take some shots of the lens mounted on the focussing helical so you can
see what the whole contraption looks like but meanwhile here are a few JPG
images without any processing from the Sony:
By the way, I think I've had this lens for 10-12 years and only recently got
around to doing something with it once I came across the cheap helical
focussing mounts from Chinese sellers on ebay.
> -----Original Message-----
> From: olympus <olympus-
> bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx> On
> Behalf Of Wayne Shumaker
> Sent: Friday, 3 June 2022 12:16 AM
> To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
> Subject: Re: [OM] Painterly vintage Lenses
> At 6/1/2022 01:02 PM, Softish wrote:
> >Another thing to chew on; one isn't stuck with the results of a single
> >The result is similar to what the LensBaby "Sweet" lenses are about,
> although undoubtedly not quite the same as if I had used one.
> >On 5/31/2022 8:50 PM, Moose wrote:
> >>On 5/31/2022 7:44 AM, Wayne Shumaker wrote:
> >>>I added a new lens to my vintage category. <. . .>
> >Softish Moose
> Thanks Moose for all the comments and this idea. I did think about
> some images. What I like about some of the alt-lenses is the way they
> interesting bokeh versus just being soft. Toby Marshall's site, in
> has the kinds of look I am seeking.
> I recently acquired some old tektronix scopes with lenses I hope to try
> once I figure a way to adapt them.
> In the mean time I'm off to home inspection....
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
Themed Olympus Photo Exhibition: http://www.tope.nl/