نقل قول:
Canon has issued a warning to owners of the EOS 650D/Rebel T4i that the rubber hand-grips of some models may turn white, and produce a chemical that can cause an allergic reaction. According to Canon, the chemical, zinc bis (N,N’-dimethyldithiocarbamate), is not used in the production of the camera but is a potential by-product of a chemical reaction between other substances found in the hand-grip. Canon has identified a certain number of cameras where a larger than normal amount of 'rubber accelerator' was used in the production of this component, which could potentially cause this chemical reaction.