I know this have been covered before, but I'm still having trouble figuring a few things out... Noise reduction is for reducing the noise from long exposures Noise filter is for reducing noise from high ISO? If you shoot RAW... does the noise filter affect the RAW file at all? Or does it only make changes to the JPG file. I use LR and not the olympus software. Under my settings menu, I do not have the option of turning noise reduction on or auto. The option is not highlighted and can not be selected at all. It seems to be set to off, but I do not have the option to change this. Am I missing something here??