It is Canon’s policy to not pollute the earth and through research, we are quickly reaching the goal.
The e-IFxs/e-HDxs series have avoided using any materials or substances that could pollute the environment.
The optical parts, featuring lead free glass, are designed to be completely nonpolluting and the mechanical parts are virtually free of all harmful products to the earth, such as cadmium, PBBS*, PBDPE*or mercury.

*PBBS:Poly Bromo Bi Phenyls
*PBDPE:Poly Bromo Di Phenyl Ethers