>>2733875 (lb)
I downloaded all of Q's photos (that appear to be taken by Q) to look for dead pixels. The idea is that if two photos have a dead pixel in the same spot, then those photos were taken by the same camera. Most of the photos are extremely low-res, are letterboxed, so this isn't at all conclusive. Knowing that Q has multiple devices, this is even less likely to be fruitful. I looked through them for about ten minutes and was only able to find one spot that looked like it might be a dead pixel. If I found two in the same spot, I'd have something, but it's worth trying this on any and all photos in the future.