I don't know, but it is not newer than Zenzanons in fact the build is not even Nikon like. I have to check against some Nikkors I have for comparison when I return home, but the aperture ring itself and how it moves, I am all in it is made by Jena until proven otherwise.774000 serial # would indicate a newer lens, no?
All my Bronica Nikkors are less than 200000.
As the king said, it's a puzzlement.
774000 serial # would indicate a newer lens, no?
All my Bronica Nikkors are less than 200000.
As the king said, it's a puzzlement.
Well, by the feel of aperture ring and the tiny aperture engagement pin it sure fits into "prototype" spin of things.I understand there was a shortfall of standard 75mm Nikkor lenses before Bronica's own Zenzanon lenses were in full production - and Zeiss Jena 80's were bought in to fill the gap - from what I've seen, most were in fairly standard Bronica style barrels, so you may have a prototype on your hands. Why it has acquired a Nikon branded front ring is an interesting conundrum.
If you don"t mind could you post more pics of this lens, dismounted, back and side?It looks like Carl Zeiss Jena made, especially aperture ring! There is interesting picture for you!
View attachment 240696
Not sure what you ar e referring to, but not to lens in question. And I have no issues using aperturering on Bronica MC lenses. But lens in question has zebra ring below outer diameter so much, it is difficult with hood on.^^ The CZJ barrel appears to be of Bronica design -- including that infernal grip on the aperture ring which is near impossible to use with the lens hood attached.
That "grip" you speak of is far easier with hood than the zebra on this odd one.I was referring the the lens shown in post 11, not yours.
Thanks, great suporting info. The lettering style sure looks like one-off engraving, matches nothing I can check, from all Nikkors, through Zenzanons and even Jena lenses, which I think leads us into prototype/transitional territory.My Nikkor lenses have a shorter diaphragm pin than my Zenzanons (but I don't have the 75mm Zenzanon)
My 75mm Nikkor-P.C has a smaller rear element that sits farther back from the diaphragm pin that your M-C. The front is also shorter than your M-C.
My Biometar (80mm P6) has the same semi-circle rear light baffle as your M-C (different from the Nikkor), and similar sized front and rear elements, and the identical zebra style aperture ring with the same slotted screw (that engages the aperture setting mechanism).
The vanity ring on your M-C does not match any Nikkor in that s/n range, Nikkor vanity rings have a distinct look to the lettering, like they were pressed instead of machined or stamped. Early S/EC Nikkor vanity rings did have a machined look, but that changed way back in the 200xxx numbers.
My guess right now, is that your M-C is a Jena Biometar with a non-nikon made "Nikkor" vanity ring. When you switch between your Zenzanon, is the FOV the same, or is the M-C closer to a 80mm?
Please keep us updated, it's a very curious lens!
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