What is this adapter?

[BrianShaw]

This came to me on a lens with a Kodak Series VIII (8) filter adapter, but is an adapter for something else. Does anyone recognize this and know what might have fit on it. I’m guessing some sort of lens hood/shade but that’s just a wild guess.

 

[John Bragg]

Looks like a step up ring for filters.

 

[BrianShaw]

No threads on inside... completely smooth. That was my initial guess but with the ridge on you outside it looks like something attaches to to outside.

 

[Saganich]

Is there room for a filter on the thread side?

 

[jimjm]

It appears to be some type of adapter for attaching clamp-on accessories to the front of a lens with a 67mm filter thread.
I have a Bronica SQ-series adjustable bellows hood that attaches to the front of different lenses with an adapter similar to this. Yours appears slightly different to mine (also 67mm), so it may from a different brand, or a generic make.

 

[BrianShaw]

The thread side, below the “flange” is 67 mm.

When I got it, this was screwed into the Series VIII slip-on adapter, whee a filter retaining ring or a lens hood would be.

 

[BrianShaw]

It appears to be some type of adapter for attaching clamp-on accessories to the front of a lens with a 67mm filter thread.

Yes... I concur. But what system? It’s quite a mystery to me.

 

[John Bragg]

Could it be part of a collapsable rubber lens hood with the rubber absent ?

 

[BrianShaw]

Could it be part of a collapsable rubber lens hood with the rubber absent ?

Great minds think alike. I just retired a rubber lens hood that partially ripped at the base. The “mount” looks extremely similar. I think you are correct. I will now throw it out!

 

[Dennis-B]

Reminds me of the adapters which fit the Mamiya G2/G3 shades, although they're 77mm. Maybe a Hasselblad?

 

[wiltw]

Any country of origin on it? It looks like the adapter that holds the Cokin filter holder

https://www.bhphotovideo.com/c/product/459622-REG/Cokin_CBP40072_P_Series_Filter.html

 

[Luckless]

Great minds think alike. I just retired a rubber lens hood that partially ripped at the base. The “mount” looks extremely similar. I think you are correct. I will now throw it out!

I hope you didn't actually throw it out. The best place for something like that is the back of a photo gear drawer where it can be forgotten and then eventually found by someone else in the future to further the random mystery of what it is.

Fun for generations!

 

[BrianShaw]

I hope you didn't actually throw it out. The best place for something like that is the back of a photo gear drawer where it can be forgotten and then eventually found by someone else in the future to further the random mystery of what it is.

Fun for generations!

I did. Hopefully that wasn't a mistake. Part of my near-term goal is to get rid of clutter. Occasionally I get rid of something and end up regretting it.

 

[waynecrider]

Looks like ring adapter for square filter holder.. Cokin is one type .

 

[Jim Kilroy]

67 mm fits the old C and CT 50mm, 60mm and SWC Hasselblad lenses. Looks like the adapter from those lenses to the “Pro Shade” the smooth side clamps into the shade. Perhaps that’s what you have. I have about 100lbs of assorted lens step up/down etc stuff that has been in a box for the past 20 years! Some of it will remain a mystery.