Problems 41 and 42

41.- Think you want to print out a photograph with a size of DIN A4: 210 × 297 mm

maintaining a printing quality of 200 dpi. Which resolution would the image need

Print size is the 210 x 297 mm = 8.27 x 11.7 inches

Quality 200 dpi

8.27 x 200 = 1654

11.7 X 200 = 2340

We need a resolution of 1654 x 2340

42.- Which resolution would the same picture need to have a 300 dpi picture?

Print size is the 210 x 297 mm = 8.27 x 11.7 inches

Quality 300 dpi

8.27 x 300 = 2481

11.7 X 300 = 3510

We need a resolution of 2481 x 3510