Or, do you mean the time laps numbers? They give an estimated time till that one sweep is completed, and Im not sure if it's accurate. And Im not sure what the bottom number is either, it doesnt seem to make any sense. For high quality images, DO NOT save as jpg in bryce, they are the worst jpgs ever known to man. render them as .bmp's and convert using a photo editor or something like photoshop. If you are refering to the resolution numbers, I just use the ones at the top of the window which determine final render size in pixels (1024x768 etc)You can also change the dpi in bryce, for higher quality, then shrink the pic in photoshop when converting to jpg.