Does anyone know what this is?

Niller73 · 05-31-2020, 02:21 AM

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They measure 35mm on the largest ring and 30mm on the small one?
I got them whit some Pentax ME gear. Is it for the lens or is it alt all for a Pentax?
Hope you can help.
Regards
Niller73

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**Digitalis** · 05-31-2020, 04:15 AM - **1 Like**

To my eyes it looks like a rear clip on filter system for some unusual mirror lens.

**Joseph464** · 05-31-2020, 07:38 AM - **1 Like**

I used to own a Zeiss Ikon Contax filter & viewfinder set that contained three of these filters. They would clip on to the front of my Zeiss lenses. From your photographs, I can't see any printed codes. Are they neutral density (clouded) filters?

VSTAR · 05-31-2020, 09:00 AM - **1 Like**

Is it a macro reversing kit for screw mount lenses??? Just a guess, but then I fail Jeopardy all the time.

**monochrome** · 05-31-2020, 09:42 AM - **1 Like**

Most likely you have a bayonet filter and its cap for the taking lens of a TLR. They don’t screw into the lens - they clip on with blades that fit into grooves similarly to the way K-mount lenses attach to the camera mount.

I currently own a Zeiss Ikon Ikoflex TLR (as mentioned above) but no accessories for it. This looks like it could clip on the taking lens.

Niller73 · 05-31-2020, 10:58 AM

Originally posted by Digitalis

To my eyes it looks like a rear clip on filter system for some unusual mirror lens.

Okay - and thank you all for the respons - fantastic!

jeallen01 · 05-31-2020, 12:18 PM

Looks like some of the clip-on filters I got for my very first camera - Kodak "Junior 2" around 1965.

05-31-2020, 10:58 AM	#6
Niller73 New Member Join Date: Apr 2020 Posts: 6 Original Poster	Originally posted by Digitalis To my eyes it looks like a rear clip on filter system for some unusual mirror lens. Okay - and thank you all for the respons - fantastic! Last edited by Niller73; 05-31-2020 at 11:09 AM.

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05-31-2020, 04:15 AM - 1 Like	#2
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,695	To my eyes it looks like a rear clip on filter system for some unusual mirror lens.

05-31-2020, 07:38 AM - 1 Like	#3
Joseph464 Site Supporter Join Date: Mar 2016 Location: Dartmouth, Nova Scotia, Canada Photos: Gallery \| Albums Posts: 164	I used to own a Zeiss Ikon Contax filter & viewfinder set that contained three of these filters. They would clip on to the front of my Zeiss lenses. From your photographs, I can't see any printed codes. Are they neutral density (clouded) filters?

05-31-2020, 09:00 AM - 1 Like	#4
VSTAR Veteran Member Join Date: Mar 2010 Location: Toronto Posts: 390	Is it a macro reversing kit for screw mount lenses??? Just a guess, but then I fail Jeopardy all the time.

05-31-2020, 09:42 AM - 1 Like	#5
monochrome Loyal Site Supporter Join Date: Mar 2008 Location: Working From Home Photos: Gallery \| Albums Posts: 26,276	Most likely you have a bayonet filter and its cap for the taking lens of a TLR. They don’t screw into the lens - they clip on with blades that fit into grooves similarly to the way K-mount lenses attach to the camera mount. I currently own a Zeiss Ikon Ikoflex TLR (as mentioned above) but no accessories for it. This looks like it could clip on the taking lens.

05-31-2020, 12:18 PM	#7
jeallen01 Pentaxian Join Date: May 2008 Location: London, UK Posts: 1,697	Looks like some of the clip-on filters I got for my very first camera - Kodak "Junior 2" around 1965.