Timothy Greenfield-Sanders’s photographic portraits hew to the demands of glamour while interjecting a sly, subversive edge. His sitters always look their best, despite an obviously crumpled shirt (Bill Murray) or a well-lit wrinkle (Tom Hanks), and never look stitched up or puppetlike. They are relaxed, always staring back with an unflinching gaze. Of course, the photographer’s task is helped by his raw material: A-list movie stars and other people well versed in the hidden language of the casual pose.