We are exploring new modalities of creative photography through robotics and long-exposure photography. Using a robotic arm, a light source is carried through precise movements in front of a camera. Photographic compositions are recorded as images of volumetric light. Robotic light 'painting' can also be inverted: the camera is moved via the arm to create an image 'painted' with environmental light. Finally, adding real-time sensor input to the moving arm and programming it to explore the physical space around objects can reveal immaterial fields like radio waves, magnetic fields, and heat flows.