From few of the tutorials I read about rendering, they suggest render the final piece at least twice the size of the desired image with DPI at around 200~300. I kind of understand why you would do this and it's because it holds more information, right? My question is, once you get this final render, and try to size down to the size you want using photoshop etc, I just don't see any improvements in details or quality from the images that are rendered in regular dimension. I reduced the size by 'Image Size' option under photoshop using either bicubic sharp or smooth, but, once it's processed,I am losing alot of information from the original. Is this the correct way to resize the image? If it is, then I just don't see if it's worth the extra time to render at large size. Please someone enlighten me?