Rangefinder cameras are a type of camera that uses a rangefinder mechanism to help photographers focus accurately. This system typically involves two images that overlap in the viewfinder; when they align, the subject is in focus. Rangefinder cameras are known for their compact size and quiet operation, making them popular among street photographers. These cameras often feature interchangeable lenses and manual controls, allowing for creative flexibility. Notable examples include the Leica M series and Canon Canonet. While they differ from traditional single-lens reflex (SLR) cameras, rangefinder cameras offer a unique shooting experience that many photographers appreciate.