David Octavius Hill was a Scottish painter, photographer and arts activist. He formed Hill & Adamson studio with the engineer and photographer Robert Adamson between 1843 and 1847 to pioneer many aspects of photography in Scotland. Their collaboration, with Hill providing skill in composition and lighting, and Adamson considerable sensitivity and dexterity in handling the camera, proved extremely successful. Adamson's studio, "Rock House", on Calton Hill in Edinburgh became the centre of their photographic experiments. Using the calotype process, they produced a wide range of portraits depicting well-known Scottish luminaries of the time.