use exposure control. AE will compensate for low lighting, giving you the grain. basically all you want to do is keep upping the exposure until you don't have grain. AE vs Exposure control. AE will give you a picture you a brighter picture, but more grain. Exposure control, you can control how much grain you want (none), but if the picture will be darker, but of course no grain. it's one of those things where you have to find a balance.