So I've been googling for a site that tells what LR2 functions do. Like what is difference of Fill Light and Brightness. I know Fill Light brightens dark parts, while Brightness brightens the whole image. I know what Clarity does, but I don't really know what it's for. Know what I mean? What about Recovery? Is there any place that explains Hue, Saturation, Luminance, etc? This would be great for people like me.