Any chance it was a laser? There is a video of a bucks-up video camera at a concert getting sparkled and instantly showing messed up colors. I would be more surprised if Canon can't fix it but you'd have to ask.
Thanks, Jim. I've gone through the footage and I can confirm that the same pink spots were there at the beginning of today's shoot, but were MUCH fainter and not as prominent.
We shot no lasers today but I was shooting in the middle of Times Square (lots of lights) and did shoot an oncoming train and its lights as well.
Is there a possibility that existing burn-in was exacerbated by a new round of lights, etc.?