We are editing reenactments for our documentary series that were shot using a 5D and a 7D. We've noticed a few shots that seem to have dead pixels in the frame for a take or two and then they disappear. The spots are on random places in the frame. I have used Digital Heaven's Reincarnation to repair the shots which works fine.
Could this simply be dust on the sensor? Has anyone else noticed this kind of thing?