Mirrorless rangefinder cameras, sometimes simply referred to as "rangefinder cameras" or "mirrorless rangefinders," are a unique category of digital cameras that combine features from both mirrorless and rangefinder camera designs. These cameras are characterized by their compact and lightweight bodies, interchangeable lenses, and optical viewfinders. However, unlike traditional rangefinder film cameras, mirrorless rangefinders do not have a separate optical rangefinder focusing system. Instead, they typically rely on digital viewfinders or LCD screens for composing and focusing.