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Zenitar-ME1 MC 50 f/1.7 Radioactive?
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PostPosted: Sun Nov 01, 2020 11:44 pm    Post subject: Zenitar-ME1 MC 50 f/1.7 Radioactive? Reply with quote
The Zenitar-M 50mm f/1.7 is a radioactive lens.

Does anyone know if the multi-coated version that also happens to have two aperture blades is also radioactive?


PostPosted: Mon Nov 02, 2020 12:20 pm    Post subject: Re: Zenitar-ME1 MC 50 f/1.7 Radioactive? Reply with quote
cbass wrote:
The Zenitar-M 50mm f/1.7 is a radioactive lens.

This somehow got into the https://camerapedia.fandom.com/wiki/Radioactive_lenses and now is getting reposted everywhere.

If we are to start calling lenses with at least some Lanthanum glass inside radioactive, the list shall grow tenfold, and must include 4 walls one is currently sitting in.
Those are techically radioactive too. Not in a sane conventional meaning of the word though.


PostPosted: Mon Nov 02, 2020 10:15 pm    Post subject: Re: Zenitar-ME1 MC 50 f/1.7 Radioactive? Reply with quote
aidaho wrote:
cbass wrote:
The Zenitar-M 50mm f/1.7 is a radioactive lens.

This somehow got into the https://camerapedia.fandom.com/wiki/Radioactive_lenses and now is getting reposted everywhere.

If we are to start calling lenses with at least some Lanthanum glass inside radioactive, the list shall grow tenfold, and must include 4 walls one is currently sitting in.
Those are techically radioactive too. Not in a sane conventional meaning of the word though.


True, many many soviet lenses contains lanthanum (most of time, it's not indicated). I wonder why many people want so much to believe soviet lenses are radioactive (I guess it would fit with the folklore of Tchernobil incident)


PostPosted: Mon Nov 02, 2020 10:33 pm    Post subject: Reply with quote
I don't want to believe anything. I found it listed in the in the link posted here as being radioactive.

https://camerapedia.fandom.com/wiki/Radioactive_lenses

I have a radioactive 50mm f/1.8 pancolar with 8 blades. The later version were multi coated and no longer radioactive.

I just wondered if the same is true of the MC zenitar.


PostPosted: Mon Nov 02, 2020 10:55 pm    Post subject: Reply with quote
cbass wrote:
I don't want to believe anything. I found it listed in the in the link posted here as being radioactive.

https://camerapedia.fandom.com/wiki/Radioactive_lenses

I have a radioactive 50mm f/1.8 pancolar with 8 blades. The later version were multi coated and no longer radioactive.

I just wondered if the same is true of the MC zenitar.


No offense, I did not speak especialy about you, it was just a general case.
I don't think coating is related because Lanthanum is used in the processus of making the glass, not the coating.


PostPosted: Tue Nov 03, 2020 5:36 am    Post subject: Reply with quote
No offense taken.
So is the Zenitar not radioactive? I have no measuring device. Just what I found on the website.
I personally don't care either way. I only have a couple radioactive lenses and both are sharp with great colors.


PostPosted: Wed Nov 04, 2020 1:07 pm    Post subject: Reply with quote
Mamiya Sekor ES 3.5/200 any info? It has typical dark yellow rear element.
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