A mirrorless camera is a type of digital camera that does not use a mirror mechanism to reflect light into an optical viewfinder, unlike traditional DSLR cameras. Instead, it captures images directly through an electronic viewfinder or the rear LCD screen, allowing for a more compact and lightweight design. These cameras typically offer interchangeable lenses, similar to DSLRs, and provide high-quality images. They are popular among both amateur and professional photographers for their versatility and advanced features, such as fast autofocus and video recording capabilities.