convert pixels to dpigreenspun.com : LUSENET : Imaging Resource Discussion : One Thread
How do I convert pixels to dpi and vice versa?
-- Andres Carneiro (email@example.com), June 01, 2000
First decide you output size. Lets take an 8x10 picture with a camera that has 1600x1200 pixels. If you want 150 dpi you have a picture that is 1600/150= 10.6" 1200/150= 8" so the picture is slightly cropped. 150 to 200 dpi is enough resolution to print on an inkjet printer even if the printer says it is 720 or 1400 dpi
-- Ralph (REObert@aol.com), June 01, 2000.
try this site, its explains this issue in great depth, and is a great site to pick up general advice and tips on scanning.
-- Martin Ellis (firstname.lastname@example.org), June 02, 2000.