Apologies if this has already been discussed, but I'm confused. Panasonic applies various types of processing to correct MFT lens issues such as vignetting, geometric distortion, and chromatic aberration. With, say, a 20mm f/1.7 Lumix lens on a GF1 body, are these corrections applied in-camera to jpgs, in-camera to RAW files, or after the fact in post-processing software? What happens when I use that 20mm lens on an Olympus camera? Is there still a way to have appropriate corrections applied? Will Lightroom know what to do when it sees a Lumix 20mm lens in the EXIF? Any and all insights appreciated. Dave F.