Is the sex real ?
looks like it, just wondering.
shareYes and no.
Yes, as in von Trier hired porn doubles to do the more graphic things shown in the film, similar to the prologue of "Antichrist".
No, as in his team of VFX people digitally added the upper bodies of the main actors onto the lower bodies of the adult doubles to make it look like they were the ones having sex.
There's a difference between a differing opinion and a forced one.