I know on the XDA forums, at least for the 5x, there is an app someone threw together to do long exposure times. I played with it some and got a pixelated mess,

I know on the XDA forums, at least for the 5x, there is an app someone threw together to do long exposure times. I played with it some and got a pixelated mess, but I didn't try a tripod. Some people on the thread produced some pretty good pictures.