Rork1973: LAB can give you a real boost if you are trying to correct a really poor color image. it is not fit to process the image from beginning to the end, tho. It's the same with RGB. There are operations that are not possible with RGB or lead to poor results. An example of this is removing JPEG corruptions and/or cromatic aberrations on poor-scanned images. LAB leads to perfect results. Different ways to process colors. IMHO eartho give us a wrong example of what LAB can do; to me seems he has exaggerate colors in the worked pictures... The colors in LAB profile are not ordered in a logical way, but in a mathematical one. If I need to rework the colors of a pic (which i do the 99% of the times i shot a photo with my D1x) i prefer to do such work in a scale I can comprehend immediately. This doesn't mean that LAB can't do such task... sometimes comes in handy if you need some particular correction, but simply it's too complicated for a plain color correction.