Author Topic: Strange rings  (Read 464 times)

Patrick Blancheton

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Strange rings
« on: April 27, 2021, 17:39:28 »
Hi All,

I bought on eBay this set of two rings for peanuts ;-)
Does anyone know what they are for ?

Patrick
Patrick

Didier Klein

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Re: Strange rings
« Reply #1 on: April 27, 2021, 19:14:08 »
Salut Patrick,

These rings seem to be interchangeable rings like on the Soligor-Vivitar bellows of the 70's...I once had a Soligor bellows (shaped like a Nikon PB5 or PB 4 but without tilt possibility) and it had such kind of rings...

Hope it helps !

Didier (Another Frenchie !)

dickb

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Re: Strange rings
« Reply #2 on: April 28, 2021, 13:43:33 »
Didier is right. I have a few sets of those rings, for Minolta MD and Pentax K. They are rather complex  as they are designed to maintain the automatic aperture linkage, so they have may tiny bearings in them. The internal diameter is rather limited, so they introduce vignetting when combined with some lenses.

Patrick Blancheton

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Re: Strange rings
« Reply #3 on: April 28, 2021, 20:05:40 »
Thanks to both of you.

I thought it was part of a macro system, and I see that I was right  ;)

Now I have to find what can I put between these two rings!
Patrick

Didier Klein

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Re: Strange rings
« Reply #4 on: April 29, 2021, 09:07:08 »
And the body mount is the old F mount, not Ai, nor Ais !

Birna Rørslett

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Re: Strange rings
« Reply #5 on: April 29, 2021, 09:34:29 »
And the body mount is the old F mount, not Ai, nor Ais !

The mount appears to have the required cut-out for AI??

Patrick Blancheton

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Re: Strange rings
« Reply #6 on: April 29, 2021, 11:08:29 »
The mount appears to have the required cut-out for AI??

Yes, that's a plain AI mount even with the little tab to use it with a DS-12 for example.
Patrick

Didier Klein

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Re: Strange rings
« Reply #7 on: April 29, 2021, 17:19:15 »
Sorry, you're right Birna and Patrick, I had an older kit, in F mount, so I thought it was the same...and didn't look carefully on your images !


Hugh_3170

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Re: Strange rings
« Reply #8 on: May 03, 2021, 14:02:37 »
Ah ha!  I think I have the bellows for these.  Must go looking for the Nikon mount attachment.
Hugh Gunn