I've just bought the time laps app for my Nex-6. I've never done any time lapse work, and I'm wondering the best way to manage exposure. For stuff that doesn't change - night time moving stars, etc. - I'll just use manual. But I'm curious about shooting, say, around sunset. Does auto-exposure work out OK to handle the changing light conditions, or will it cause exposure to jump around in a distracting way? Although it's annoying to be required to pay an extra $10 for it, the time laps app actually looks pretty nice. Thanks.