This is what Delacroix wrote to Nadar after receiving his portrait:
"Sir,
I am horrified by the results we obtained, and have come to plead with you most insistently and as a favor that I am requesting, to destroy all the prints you may have in your possession, as well the shot itself. I don't have to explain how upset I would be to learn that even one of these sad effigies could be seen. I am still ill, and hope that one day I will be in better shape, but for the love of god, and out of friendship for me, do not allow the result of this particular moment to survive (…) ."
Nadar did not honor his request, and this potrait is now one of the most famous ones known of the great Romantic painter.