[photography] DPI is easy

Really it is, and yet I see so many people get confused about the concept. In a way it’s understandable, given the amount of misinformation out there, so here’s my attempt to explain it as simply as possible. DPI is about physical size This is the essential detail. Everything else stems from this, the concept of physical dimensions. It’s part of the name: dots per inch. A digital image can’t have its dimensions measured in inches or millimetres, since it’s literally just a list of numbers. How many inches wide is a 16 megapixel image? »