Holographer was a profession. Holographers would specialize in capturing holographs for use in various media. One of the most famous holographers was the Rodian Bovit Leebo, who captured the well-known image of Ka'Pa the Hutt, which was featured in Riccix's Revised Basic Holodictionary.
During the Galactic Civil War, Vendri DeRalm was a holographer who enjoyed exploring unspoiled worlds and became adept at at lining up the perfect shot in 2-, 3-, and 4-dimensions. After he was continually harassed by the Galactic Empire, he was recruited into the Rebel Alliance.