Addie Morfoot Contributor The Telluride Film Festival’s emphasis on documentary has not wavered in recent years. But the prominence of nonfiction fare at the 49th edition has arguably made this year’s Telluride the autumn Sundance, where some of the biggest buzz is for docs. The lineup, kept under wraps until the eve of the fest’s opening on Sept. 2, includes 16 docs from novice and veteran documentarians, including Steve James (“A Compassionate Spy”), Matthew Heineman (“Retrograde”), Chris Smith (“Sr.”) Ondi Timoner (“Last Flight Home”) and Ryan White (“Good Night Oppy”). (Additional “secret” screenings have yet to be announced.) The rising level of documentaries at the Colorado fest is largely due to the influence of Telluride executive director Julie Huntsinger.