I don’t know if you’ve heard of it, but among the lenses that were produced before the 1970s. There are many radioactive models. Thorium dioxide was added (now prohibited) to the lenses of the lens to increase their refractive rate and its content could be up to 40% ThO2. [List of radioactive objectives]

WOW: Oh my god I have now a Pentax Asahi 1.4 SMC Takumar on a table 20cm away from me...what do I do? and :(

zzz: You’re already radiated anyway, so there’s not much you can do. Just accept it as a fact and bury it at a depth of 2m in a place where there are no people. Then make sure that no one will ever enter your room and touch your desk. Then, considering that you are still exposed, it may be a good idea to fly to Fukushima and help the guys cope with the disaster – it will be your contribution to the safety of future generations, your action will benefit the entire human race.