Complete the following sentence: In 1860, after Felice Beato left for China to photograph the
II Opium War and Antonio Beato went to Egypt, Robertson briefly teamed up with Charles Shepherd back in Constantinople. The firm of Robertson &amp; Beato was dissolved in 1867, having produced images - including remarkable multiple-print panoramas - of Malta, Greece, Turkey, Damascus, Jerusalem, Egypt, the Crimea and India. Robertson abandoned photography in the 1860s; he returned to work as an engraver at the Imperial Ottoman Mint until his retirement in 1881. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ He died there in April 1888.<unk> He died there in April 1888.