Have you ever taken an image, say of people at an event and then later when you look at the image on your computer the people that were the subjects are slightly out of focus but someone in the background came out sharp? This has happened to many new photographers but many of them do not know why. If it has happened to you don’t feel bad, because in this article I will explain how to correct for this issue. You can see an example in the image below. The couple are the subject but the old woman in the …