Camera work
Some of the camera work and staging in the film is wonderful: low angles emphasising the gloom and size of the Victorian mansion, characters in deep focus simultaneously in the foreground and background of the drawing room adding to the feeling of size of the set, views through imposing doorways and pillars, shots of Nicholas backstage during the Rachmaninov looking like Vermeer's "Allegory of Painting", Peter & Francesca back-to-back in the cafe, tight close-ups on Mason's face melodramatically emphasising his menacing aura whilst enabling him to show the hints of conflicting emotions as well, the use of the mirror to give an extra angle on F & N disagreeing about how much freedom he gives her, F's pale arms dramatically emerging from her black velvet dress as she plays piano: the list of great shots is a long one.
And then, then... at the emotional high point of F & N's relationship, when they have their only tender moment as he convinces her there's nothing really wrong.... the director (and/or editor) does his damnedest to wreck all of the sexual chemistry they've had building to this point by barely having the two of them in the same shot together! There's a nice arty shot of them through the lattice gates, but apart from that the intimate feeling of the moment is frequently broken by either the camera being on just one face at a time, or showing Max's arrival. Now I know that both of these faces are wonderfully photogenic, but that's already been established; why not use this moment to see both characters act and react to what each is saying? After all- this is Nicholas' big emotional breakthrough: let's see its effect on Francesca! This scene is effectively a surrogate love scene and given that their final coming together at the end is so brief this is all that the audience gets of them romantically, so there's a lot riding on it- so to speak.
It's clumsily done in my opinion, especially when compared to the camerawork in the showdown between Larsen & Nicholas- there they're almost always simultaneously in shot and you see every shared nuance.
The missed opportunity bugs me every time.