What is the ruling on a woman removing her hijab on her wedding day in the presence of a photographer, with no men present?

It is not permissible for a woman to remove her hijab in front of non-mahram men, whether on her wedding day or any other day. If she removes her hijab in front of a non-mahram photographer, she is committing a sin, and she must repent and not return to such an action in the future.