Late last year, Canon issued a product advisory for its T4i cameras. The company warned that certain T4i’s rubber handgrips had been improperly manufactured and, given the right circumstances, could turn white and cause a rash.
Now the same problem has occurred, only with the rubber surrounding Canon’s SX50 superzoom’s viewfinder. If yours matches the serial numbers indicated in the advisory, the rubber could turn white indicating deposits of zinc bis (N,N’- dimethyldithiocarbamate). In some cases this could lead to skin rashes and/or eye irritation.