Just been introduced to this film by a friend. I was immediately struck by the softness of the image (not lack of focus) but that quality that has alot to do with the glass used. I wasn't surprised to learn (and I hope IMDB is correct here) that Delbonnel used Cooke S4 lenses. Its a quality I've seen from other movies filmed with them. But in this case the combination of optics and treatment, both lighting and colour, creates a sadness discussed above but also a luminosity that is at once uplifting and beautiful.