DougyFrisch
+1y
i do my banners at size and at 100-150dpi... and as far as a "calculation", its just simple math... take Brants formula for instance, once you blow up his file for 48"x96" to print, it's final dpi will be 100 dpi... 4 and 8 go into 48 and 96 respectively 12 times, so divide the 1200 by 12 and vuala...