1) Specialiser 2) Specialist 3) Specializer 
• (n.) One versed in Eastern languages, literature, etc.; as, the Paris Congress of Orientalists. • (n.) An inhabitant of the Eastern parts of the world; an Oriental.
O`ri·en'tal·ist noun [ Confer French orientaliste .] 1. An inhabitant of the Eastern parts of the world; an Oriental. 2. One versed in Eastern languages, literature, etc.; as, the Paris Congress of Orientalists . Sir J. Shore. 
[n] - a specialist in oriental subjects
The accession of Queen Victoria in 1837 coincided with the beginning of the great age of rail and steamship travel. Artists from Britain were soon spreading across the world in search of new and exotic subjects. Those who went to the Middle East became known as Orientalists. Lead figure was John Frederick Lewis who spent thirteen years there from 1...
noun a specialist in oriental subjects