Digital Light Processing, commonly known as DLP, describes how some projectors display an image. DLP projectors use thousands of tiny mirrors, while LCD projectors send light through a prism to create an image. DLP projectors generally produce better picture quality than LCD projectors, although some users complain that reds aren’t as vibrant as they could be. DLP projectors are a little more expensive than LCD projectors, but the upgrade in quality is usually worth it.