Hi there,
So I recently dug out an FD 55mm 1.2 Non SSC that I bought from a yardsale ages ago and I just had a question about radioactivity?
Been asked a lot and tried doing my research into it, am I right in thinking that it's only the SSC aspherical version of the lens that contains thorium? If so how do I tell the difference between the two?
Thanks!
This is the lens: