care carpeting checking connected connections corridor doors entrance equipment exit guidelines hand-sanitizing healthcare healthcare-providers hospital hospital-ward instructions medical mobility notices nurses nursing nursing-station passageway post-operation pre-operation quiet room Rooms sanitation testing trolleys ward analog antique basic camera dark-room-required detailed develop film film-camera film-photos negatives old photo photographer photography photos point-and-click popular pre-digital print retro seventies simple simple-operation size small style vintage asa film-speed iso lens light-sensitivity shoot shooting box-camera