Mobsby took over as official artist and photographer for the Department of Agriculture in 1904 and continued in this role until 1930. He did not continue with film production, preferring to outsource this work to others. He created exhibitions for annual shows and the Royal National Agricultural Exhibition. Mobsby’s photography gained international recognition when he represented Queensland at the Franco-British Exhibition in London in 1908. He also exhibited at the Panama Pacific International Exposition in San Francisco in 1915. He undertook a motion picture certificate course during this exposition. He also exhibited at the British Empire Exhibition in Wembley in 1924. He exhibited in Dunedin, New Zealand for the New Zealand and South Seas Exhibition in 1925-1926. Mobsby gave public lectures on Queensland which were illustrated by lantern slides. He also participated in radio broadcasts. He retired in 1930.