After working as a dentist in Tønsberg from 1886 to 1889,[1] he studied in Paris under Léon Bonnat and Fernand Cormon from 1889 to 1892. Time from 1893 to 1894 was spent in Italy.[2] He then moved to Stavanger. There, in January 1897, he married photographer's daughter Karen Wally Jacobsen (1874–1962). In 1898 they moved to Christiania.[1] He became a father-in-law of Carl Semb, who married Stenersen's daughter Helga Louise Stenersen in February 1926.[3]
He mainly painted in the naturalist style, with portraits of Christiania as well as Odal, Gudbrandsdalen, Vestfold and Valdres. He also portrayed many notable people of the day. He was also a notable illustrator, among others in the books Vestlandsviser (by Vilhelm Krag, 1898), Fra fjeld og fremmed Land (by Theodor Caspari, 1900), Smaafæ (by Hans Aanrud, 1906 as well as his own release Besøg i skogen (1905).