Yes, you read that right. According to a recent service advisory, that new Canon T4i (EOS 650D/EOS Kiss X6i overseas models) you bought for set shots and DSLR video shorts may cause an allergic reaction when being held in humid and hot conditions.
… the quantity of rubber accelerator used in the affected production (of the front rubber grips of some EOS REBEL T4i units) was slightly higher than usual. As a result the rubber grips may turn white due to a chemical reaction with the rubber accelerator and other substances. High temperature and high humidity may contribute to this condition. – Canon Service Advisory
The issue pertains to Canon T4i (EOS 650D/EOS Kiss X6i overseas models) models with the sixth digit of the serial number being a “1” and manufactured during a sixteen-day period between May 31st through June 15th, 2012. The cause of the issue seems to be that there was too much rubber accelerator (known as Zinc bis or N,N’-dimethyldithiocarbamate) applied to the hand grips. Over a short period of time, a chemical reaction will take place to turn the rubber grips white. Now, in your minds eyes it may look cool to have white hand grips on your DSLR, the problem is that some people may end up with an allergic reaction to the affected grips in hot and humid temperatures of these summer months.
The amount of zinc bis (N,N’-dimethyldithiocarbamate) detected during our testing was minimal. While Canon has not received any reports of injury or allergic reactions, depending on one’s health and physical condition, in rare cases when this substance comes into contact with skin, allergic skin reactions* may develop. In addition, if eyes are rubbed after contact with the substance, symptoms, such as red eyes, may develop.
To determine if your camera is one of the affected, look for the six number in your serial number. If it’s a “1,” you’ve got an affected camera. If a 2 or higher, you’re free from worry. Another way to find out is to go to Canon’s website here and input your number. Enter the 12-digit serial number from your camera then click the Submit button. One of the following messages will appear:
· “Your camera is NOT affected” → No further action is required
· “Your camera is affected” → Stop using the camera immediately
A fix is currently being worked out at Canon and it is on track for implementation later this week (approximately July 12, 2012). Then Canon will likely have users send in their cameras to have the rubber grips completely replaced. Canon will advise either by posting update on their web site and also to notify registered users via email. So it’s vital that users register their EOS Rebel T4i/EOS 650D/EOS Kiss X6i, so that Canon can inform them via email when the free repair service will commence.
Meanwhile, users of these affected cameras are advised to take the precaution of thoroughly wash hands with water if they have come in contact with the rubber grips that have turned white. And if any medical symptoms develop, please consult your physician immediately.