Only select lots produced between May 31st through June 27th, 2012 have the potential to turn white after a short period of time, and after inquiring with the rubber manufacturer and performing their fair share of analysis, the white substance is determined to be zinc bis (N,N’-dimethyldithiocarbamate). High temperature and high humidity have been cited to be possible contributors to such a condition, where zinc bis (N,N’-dimethyldithiocarbamate) that are deposited on the rubber surface might be the result of a chemical reaction.
To know whether you are affected, just refer to the serial number of your camera. Should the 6th digit of the serial number be “1”, then you would do well to contact the nearest authorized Canon customer support (in the US and Puerto Rico). Otherwise, your Canon EOS Rebel T4i is free from this potential defect. [Press Release]