I've seen this effect alot. Wondering what was used to make it. I assume they are putting some sort of glass distortion in front of the lens? Any insight as to what it was? Has anybody recreated this effect before? The flickering and shakiness of the effect later in the video makes me think its more that putting a glass bulb in front of lens?
can be seen at 3:02, 3:07, 3:55
and a REALLY extreme cool version of it at 4:12