Since the beginning of digital time, photographers—and many manufacturers–have gotten confused over the differences between dots per inch (dpi) and pixels per inch (ppi). The terms are often interchanged—but they shouldn’t be, especially when it comes to describing printer or camera resolution. Why? A printer may use 6 or more dots (from individual color cartridges) to form the image of a single full-color pixel captured by a camera or scanner. This helps to explain why a digital file with 200 ppi res can be printed at 600-5400 dpi depending on the printer and its output settings.) Now it looks like we’ll have to add the way a camera or computer LCD monitor’s resolution is described to the never-ending saga of dots vs pixels.