An undoubtedly silly question: I've been playing around with SpeedGrade for 2 days now, and I've got three wheels to work with: Offset, Gamma and Gain. Now, I've messed around with the three, but I don't exactly know what they mean, and google doesn't really seem to help. In the past I worked with Premiere's curves, which really worked for me, but I thought I should move to something better. Can anyone tell me what those three things mean? Thank you!