Why I'm here - took a few days off, exposing some Velvia on Speyside.
It was me, myself, who was using a video lens with a 20/3.5 (as Moose
recalled), but no bubble gum was involved. Gum was - the water soluble kind
on brown paper, used to make up a tube to fit the C-mount (actually
CS-mount) lens in front of the Zuiko. Thus I was not fitting the C-mount
lens to OM mount at all, though it would not be hard to do. Since Paddy is
in UK, I can direct him to SRB in Luton who would be able to make up a
T-mount adapter for the C-mount lens, equating to the PMtoB adapter made by
Olympus for the 20/3.5 Macro Zuiko, similar to what Joe Beljan produces in
US. It would need a disk threaded on the outside M42x0.75 with a central
hole threaded 1" x 32tpi (Joe Beljan's has a central hole 0.800" x 36tpi for
the RMS fitting)
The SRB price list is here: http://www.srbfilm.co.uk/index1.html
BUT as Bill points out, the lens will not cover a 35mm frame, AND the lens
register (lens mount flange to film plane distance) for C-mount is 17.526mm,
while the OM register is 46.00mm so mirror lockup would be a necessity - and
then how would you frame and focus?
Thanks to others for the explanation of (and introduction to) Rube Goldberg.
--
Piers
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Chuck Norcutt
Sent: 27 October 2005 03:53
To: olympus@xxxxxxxxxx
Subject: [OM] Re: C-Mount to OM bodies.
Where's Piers when you need him? Wasn't he fussing about with macro using
C-mount lenses stuck on with bubble gum or some other Rube Goldberg setup?
Chuck Norcutt
Bill Pearce wrote:
> C mount won't cover the full frame. Probably wouldn't cover all a 4/3
> sensor, either.
>
> Bill Pearce
> ----- Original Message -----
> From: "Patrick Moore" <paddy@xxxxxxxx>
> To: "OM Mailing List" <olympus@xxxxxxxxxx>
> Sent: Wednesday, October 26, 2005 6:10 PM
> Subject: [OM] C-Mount to OM bodies.
>
>
>
>>Hi All,
>>
>>Just a quick query. I was wondering ifî??anyone here knows of a c-mount
>>(i.e. used on CCTV and other video cameras) to OM mount adaptor, or a
>>way of persuading the two to work in harmony?
>>
>>atb,
>>
>>paddy
>>
>>==============================================
>>List usage info: http://www.zuikoholic.com
>>List nannies: olympusadmin@xxxxxxxxxx
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>
>
>
> ==============================================
> List usage info: http://www.zuikoholic.com
> List nannies: olympusadmin@xxxxxxxxxx
> ==============================================
>
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List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
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