Visual aesthetic aside, having studied the tale extensively and I can say...Don't waste your time. I hold a degree in Lit and have studied the Arthurian legend extensively. I don't say this to brag. I needed extensive knowledge to even track this film. The rest of my party was so bored that most of them fell asleep and I don't blame them.
I am a huge fan of art house cinema and thoughtfulness being part of the experience of film. But don't listen to the armchair critics that believe suffering through a film confused is the same as enjoying a film.
The plot was convoluted and completely experimental in respect to the original narrative. The chemistry just isn't there with any of the actors, which is sad for Dev Patel because he does have the chops. And the key choices made on part of film makers took the most important moments and made them vague and confusing. This isn't useful to make the film better. It stunts the story and leaves everyone confused.
Overall, a poor experience. I do not hold with the film bros that have tricked themselves into believing they extracted more marrow from the bones of this film. Overall, the corpse is rotten and better left in the bottom of the spring.