Earlier this month, Canon issued a product advisory on the Rebel T4i for an error in the firmware. Two days after the issuance of that advisory, Canon issued another product advisory for the Rebel T4i with regard to the presence of zinc bis in the rubber grip.
In short, this substance may cause the rubber grips to turn white and could potentially lead to skin allergies or irritation. The lot affected can be identified by looking at the serial number. If the sixth digit is “1″ then your camera could be affected.
Specific details in the full product advisory below. [Read more...]