Lucie De Barbuat and Simon Brodbeck, French and German natives respectively, are self-taught artists living and working out of Paris, France. they have been working together for 6 years, doing mostly photographic work.
in their series Silent World, they used a neutral density filter that allows for extra-long exposures, thereby removing moving objects like people and cars.
see a short film about the series after the gallery.
more on Lucie and Simon here.