Radioactive Zuikos - for zuikoholics

[p.giannakis]

Hi fellow zuikoholics.

The issue of radioactive lenses has been discussed in various threads in here. What I wanted your expert view on is whether there actually are any radioactive Zuikos out there. There are some videos online with people measuring radiation but those readings (to my non-expert view) is negligible compared to other lenses with thorium glass (i.e. Takumar 50f/1.4).

Is anyone aware whether Olympus used thorium in their lenses? I can find resources stating lanthanum being used but this is not a radioactive material.

 

[p.giannakis]

Nope? No one?

 

[andrewmore]

Try
https://camerapedia.fandom.com/wiki/Radioactive_lenses
This seems to list a good number of lenses, but I'm not familiar enough with Olympus lenses to make much sense of the entries.

Regards

Andrew C. More

 

[xayraa33]

The OM Zuiko 55mm f1.2 lens is said to be slightly radioactive, the glass does yellow as it ages but can be cleared with exposure to UV light.