So basically I had this idea for a gift for a friend who is really into photography, including the technicality, and also brain-teasers.I was thinking - is there anything (a material or an object) that changes when you look at it through camera? Like something that changes color, or appears to be of different shape or whatever really. It could change when zoomed in on, or when captured with flash on, ...I was thinking of gifting it and saying that there's something special about the gift, but that I would let the recipient find out what it is himself.One of my specific ideas was a cube that's somehow made out of different metals on each side and somehow appears normal to the eye, but different to the camera (under certain conditions). But I don't know if such a thing exists/can exist.Thanks for any ideas. via /r/Gifts http://ift.tt/2n9crwT
