Gerhard Richter has had a career as both an abstract painter and a creator of realistic portraits, in between going all nihilist with his series of flat grey paintings and then sensationalist with his grubby, ill renderings of photos of the Baader-Meinhoff gang.
He’s been called great, and he’s been called rude words. In Corinna Belz’s inquisitive documentary, “Gerhard Richter Painting,” she circles around the question of the man behind the name as he prepares for several retrospectives and new openings — and, yes, also as he paints.