A lighting technician with Sotheby's Rupert Barth von Wehrenalp (L) holds a flash as Sotheby's staff member Helen Collier poses for photographs next to the painting "Modern Rome - Campo Vaccino" by British artist J.M.W. Turner, in central London July 2, 2010. The artwork will be offered in Sotheby's Old Master and Early British Paintings Evening Sale next week and is hoped to fetch between 12 and 18 million pounds ($18-27 million). REUTERS/Paul Hackett (BRITAIN - Tags: BUSINESS SOCIETY)