The release of “Eun Sun Kim: A Journey Into Lohengrin,” an hour-long film by San Francisco Opera and Lumahai Productions has been announced. Directed by Elena Park, the new film takes viewers behind the scenes during the weeks of rehearsal leading up to the opening of Wagner’s “Lohengrin” at San Francisco Opera last October. It follows the production team and artists, headed by Caroline H. Hume Music Director, Eun Sun Kim, as they approach Wagner’s musical “Mount Everest.” Tenor Simon O’Neill and bass Kristinn Sigmundsson, veterans in their respective roles discuss their experiences juxtaposed by Maestro Kim, soprano Julie Adams, mezzo-soprano Judit Kutasi, and baritone Brian Mulligan’s reflections of their first time performing the work.