On the face of it, the arts of painting and filmmaking should make for sterling cinematic pairings. Both are primarily visual mediums, after all, and film can be used to capture not only the finished product, but the actions that went into creation. It certainly should work better than, say, the craft of writing, a solitary art that offers little in the way of kinetic energy to translate to a moving picture.
Why, then, do so few movies accurately capture the craft of painting?