I have used a Rebel XT for the past 5 years and have always been happy with it. I thought it was time to move up... so I saved up and purchased a 7D with much excitement. I have put a few hundred shots in using the same lenses I have used on my rebel. To my dismay, the 7D shots were grainier than the rebel when viewed at a 1:1 ratio! With the rebel, I was just shooting to jpg... but with the 7D I was shooting to RAW and they are STILL grainy! I've been shooting at ISO 100 outdoors in the daylight, with a fast framerate (faster than 1/500 usually) using AF. I am not doing anything different between my two bodies. Is this something common with the 7D? Or could there be something wrong with my camera?