Had an interesting issue today. I was taking photos for a church event today and every so often I would get an Error 99 (shutter release problem) and I would have to turn off and on the camera to make it work for a bit. This happened 5 times within 30 minutes. I then decided to switch out the Canon batteries for the cheapo ones I got with my grip and the problem ceased.
So I'm wondering if anyone knows what the problem may be? I bought the camera brand new about 3 years ago and it only has 27000 shutter actuations on it.
Any help would be great!