I've heard a number of times that rendering at double the size of a final image and then reducing the image size by half in Photoshop will yield superior results to simply rendering at the final intended output. Can anyone prove this? I rendered an image twice, one at 800x800 and the other at 1600x1600, then reduced the 1600x1600 image to 800x800. A side by side comparison showed identical images. I'm only interested in onscreen picture quality, this has nothing to do with printing.