A DSLR (Digital Single Lens Reflex) camera is a type of camera that uses a mirror-based optical viewfinder, allowing you to see exactly what the lens sees when you look through the viewfinder. DSLRs also typically use larger and higher-quality image sensors than mirrorless cameras, resulting in better image quality. A mirrorless camera is a type of camera that utilizes a digital image sensor, allowing you to preview images on a display. Mirrorless cameras do not have a mirror-based optical viewfinder, so you must compose shots using the digital display screen. As a result, mirrorless cameras generally have smaller body sizes and weight than DSLRs, and as they don’t require a mirror system of any kind, are typically cheaper than DSLRs. Mirrorless cameras also typically have faster shot-to-shot performance and shorter shutter lag.