Canon FL 58mm f1.2 lens radioactive via thorium 232
Thorium is mostly a beta radiation (electrons) emitter that was used as an early
kind of "ED" or low-dispersion glass to correct aberrations in the lens.
Kodak KODAK EASYSHARE Camera, C1550 1/80s f/5.6 at 11.2mm iso80
full exif
