Fantastic film
I'm going to go against the predominant opinions here and say I loved almost everything about this film.
I've known the basics of Ramanujan's story for a long time and was very excited to see someone had filmed it at last. I found the film intensely emotional and engaging.
I would have been happy with a bit more mathematical details, but it is difficult to do too many scenes of Hardy explaining the basics to his manservant so the rest of us can catch up!