 His eyesight deteriorated too much to work with such precision on the fine drawings and etchings of plates used in lithography, thus he turned to landscape painting and travel.Among other travels, he visited Greece and Egypt during 1848–49, and toured India during 1873–75, including a brief detour to Ceylon.While travelling he produced large quantities of coloured wash drawings in a distinctive style, which he converted later in his studio into oil and watercolour paintings, as well as prints for his books.