>> This is a double exposure
with different filtering for
the room light and the light-
painting, which was done with
a flashlight by my assistant
Astrid. Typically, waterworks
operate almost completely
automated, therefore these
facilities are mostly devoid of
any human activity, especially
at night. Nevertheless I wanted
to somehow animate the scene,
so I had Astrid walk along the
passage between the pumps
with the torch and trace a bright
line in the air, as if a technician
were doing his round.