Here’s how to scan photos to get the best resolution from your desktop scanner. First, I’ll explain some of the basics and terminology and then I’ll provide a handy table for reference at the end of this post. Halftones and Lines per Inch (LPI) In graphics arts terminology, a photograph from your camera is called a “continuous tone” image. Printing presses require a continuous tone image to be converted into a “halftone.” A halftone is created by placing a “screen” made of thousands of dots on the photo and taking a “picture” of it. Nowadays, this screening process happens using computer…