_Black Robe_ is an under-appreciated gem. With fine acting, a strong, literate screenplay, beautiful visuals from the spare, cold Canadian wilderness, and a lyrical, dialogue-light storytelling style, this film is an absorbing experience. Viewers with less patience for visual storytelling, or who don't like having to pay attention to details, will probably find it slow-going.
Be forewarned: _Black Robe_ is a brutal film, by modern western standards. Gruesome torture is openly referred to; native americans, particularly the northern Mohawk and Huron peoples, are _not_ substantially idealized.
Nice ethnographic touches are preserved -- for example, the Alqonkian-speaking group who agree to guide the Black Robe are permitted to clearly express their perplexity at the Jesuit's rudeness for not sharing his tobacco. Similarly, a Mohawk war-leader keenly sees opportunity in permitting the French to live: they can be traded for muskets, and forced to teach the Mohawk how to use the powerful new weapons. No "simple savages", after all: The Iroquois did not come to control much of the northeast through stupidity.
While widely excoriated by some native american advocates for its depiction of Mohawk and Huron brutality, the film actually soft-pedals the reality (as noted by other reviewers). The southern, Five-Nations Mohawk may have abandoned ritual cannibalism by this time, but it's certain that ritual torture and cannibalism were practiced throughout the Iroquois sphere of influence up to the early contact period. It was an aspect of their culture, and really no stranger than similar practices as recorded among christianized Scandinavians circa 1060 AD.