So I am on my 3rd Triumph (really wish I would have kept my 1st one now unfortunately.) But I have the infamous yellow/green spot in the center of the camera. BUT it appears only under certain lighting. I think it only shows under fluorescent lighting. Otherwise I don't see it in any other type of light. Is that normal or should I go in for my 4th one (really glad I got the Bestbuy protection thing if I did!)