Single-lens reflex (SLR) cameras are popular among photography enthusiasts and professionals. However, not everyone is familiar with this terminology. There are various synonyms for the term SLR. Firstly, an interchangeable-lens camera (ILC) is a term often used to describe cameras that allow users to swap lenses depending on their specific needs. Secondly, a digital single-lens reflex (DSLR) is an SLR camera that captures images with a digital sensor instead of film. Lastly, a mirrorless camera is a type of ILC that does not require a reflex mirror to reflect the image into the viewfinder. Instead, the image is viewed from the sensor itself through an electronic viewfinder or on the camera's rear screen.