8x10 inches and 4x5 and 20x16 size are 5/4 = 1.25:1 Aspect Ratio 11x14 inches is 14/11 = 1.27:1 Aspect Ratio All metric photo paper sizes (A4, A6, etc) are √2 = 1.414:1 Aspect Ratio When the framing is good and the Aspect ratio is good, then resample to the inches ...