Same thumbnail, but a different treatment of the same image as following (yesterday's). This is another aspect of the PP9 mosaic tool. I did exactly the same except in this case I clicked on the vignette option. The obvious change is that the vignette is there. Looks like parts of the stones have fallen off the black background (OK, I changed that from walnut to make it show better.). Less obvious, noticeable is the fact that the mosaic pixellation of the central part is much more subtle. In fact, in this image, the mosaicness is almost invisible. On the original (4X this size) it is still very visible but still subdued over the original. Enjoy; thanks for viewing.