Michelle Williams performs Lizzy, a ceramic artist pressured out by the impending opening of her solo exhibition, and Hong Chau (“The Whale”) is her blithely oblivious neighbor, fellow artist and landlord in this sharply observant art-planet comedy-drama from the gradual-cinema virtuosa Kelly Reichardt. Michael O’Sullivan suggests: “There’s a good deal of chat about very little. But it’s in involving the little chat — Lizzy bickering with her loved ones at the opening about regardless of whether there is also significantly cubed cheese, or not ample — that Reichardt’s movie speaks loudest. What is it saying? That the ideal art is not a faith, or magic, or perhaps is not even genius. That, in its place, it’s really hard work.” (R, 108 minutes)