Part of the Museum of Fine Arts’ " American Folk on Film " documentary series, this study of Georgia pastor Howard Finster — who claims to be " a stranger from another world " and who has been called the " Picasso of folk art " and " a backwoods William Blake " — is a Boston University project by David Carr, Julie DesRoberts, and Randy Paskal, and it suffers from a student budget and pedestrian visuals. Finster’s visionary Christian paintings don’t reproduce well on 16mm film, but the interviews with the oddball artist himself are amusing, especially when he takes the opportunity to warn sinners about the Apocalypse. There are also conversations with a posh New York art dealer, a pompous Yale art historian, and R.E.M.’s Michael Stipe, a fellow Georgian and total Finster freak.