I have an iPhone and I am trying to photograph or take a video of my laser displaying the ILDA test pattern so the pros here can analyze it. If I take a photo, it only captures what was being scanned at the moment the picture was being taken, and if I try to do a video, the flicker is a lot worse in the video than in real life. Back in the day, I would use 100 speed film and keep the shutter open for longer. Can I do this on an iPhone electronically?