I just bought a D90 two days ago and it seems like even my low ISO shots are noisy. Is this a faulty body? should I exchange it? Here's an example. Shot with a 70-200 f2.8 Nikkor At ISO 400 http://files.me.com/conner.allred/yzwqao I don't have a web-server anymore so you'll have to download the picture. But that's where it's being hosted. Thanks!