Artist Vik Muniz is renowned for making portraits out of unusual objects—sugar, dirt, peanut butter, chocolate syrup. Here, filmmaker Lucy Walker follows Muniz as he returns to his native Brazil—to Jardim Gramacho, the largest landfill in the world, outside Rio de Janeiro. His plan is to create portraits, constructed entirely out of garbage, of the catadores who pick through the rubbish for recyclable items, and to give the profits from their sale back to his subjects. One of the most moving aspects of the project is the relationships he forms with the garbage pickers, as first he takes carefully posed photographs of them, and they in turn join him in the construction of their portraits, transforming huge reproductions of the original photo into collages of trash. The result is a complicated interplay of artistic process, collaboration, and responsibility to one’s subject. Visually striking, the film moves between vast images with panoramic scope and close-ups in vivid detail, holding the human drama and the magnificent artwork in exquisite balance.  ST