>> This week, start your arts viewing with a fascinating documentary on the lives of a powerful curator/collector and his ever controversial photographer lover. Black White + Gray: A Portrait of Sam Wagstaff and Robert Mapplethorpe examines the lives of these two men through those who knew them best, such as close friend Patti Smith, and how Wagstaff’s relationship with Mapplethorpe vaulted them both into careers as art world visionaries, not the least of which included selling what many consider explicit pornography as high, fine art. See a screening of the film tonight at the Corcoran at 7 p.m.; $10 for members, $15 for the general public.

>> Hop just north of the city lines for the second Friday Bethesda Art Walk. Be sure to catch the opening of Land at Fraser Gallery, which is a group show of breathtaking landscape photographs using unusual techniques (pictured). Find a listing of the other Art Walk participating galleries here. Receptions are from 6 to 9 p.m.

>> At the Honfluer Gallery, renowned Belgium artist Arie Mandelbaum opens Die Umwelt, a collection of small large paintings that use a layered technique to depict moments of pain or “wounds” surrounded by every day objects. See them at the opening reception Saturday at 7 p.m.

Image of In Vitro Complex No.V by Anna Druzcz courtesy Fraser Gallery.