Don't know the title

Wife has an affair with a photographer, husband learns of it and confronts photographer / kills him in the process. Husband then abandons the family and assumes the identity of the photographer and travel places being anonymous.

“The Big Picture” (2010), original French title: “L’homme qui voulait vivre sa vie”?

Quote from the above Wikipedia page:
" A successful Paris lawyer with a seemingly perfect life discovers that his wife is having an affair and accidentally kills her lover in a moment of madness. He escapes the law by faking his own death, assuming his victim’s identity, and making a fresh start on the Adriatic coast as a photographer."