Korean helmer Bong Joon-ho bowed “The Host 3D” at the Busan film festival Monday, the first local film to be converted from its original 2D version.Producer-distrib Chungeoram collaborated with 3D conversion company Studio Raon, investing $1.2 million in the 2006 hit, while prepping “The Host 2″ in 3D. Helmed by Min Byung-chun, the sequel is in pre-production with release planned in 2013. “I was worried about the conversion in the beginning,” Bong told a news conference in Busan. “But I’m satisfied with the converted version now in that it makes space perception more lively.” He denied rumors that his next project, “Le Transperceneige,” would be in 3D. The $34 million sci-fi film, based on a French comicbook, will begin shooting in March in Prague. The “Host” remains the top-grossing local film of all time.