Barton admits his disciplinary problems in England will not go away immediately, but has appealed for his new club's fans to judge him only on his efforts for Marseille.
"It is difficult because my bad reputation, I find it a bit unfair," he said. "But it's hard to say that when you look at some of the incidents in which I've been involved.
"However, I hope that people in France, and here in Marseille, judge me on what I do here and not in relation to what they read.
"The English media love to make headlines and dramatise because, as English football is the number one sport there, it is also one that generates the most media coverage on television and in the press.
"They are stories like Hollywood, far from the truth."