I see it all the time – a misunderstanding of what DPI and PPI mean and why they are important to us. They seem to get interchanged often and become a blurry idea of what our graphics are. When it comes time for the shop to print an image, the assumption is that everything is perfect for what we need at the final output. We need to have a good understanding of what these two terms are, and more importantly, how they affect us in the print...