 It has been powered by compressed air pumped before filming into the camera with a simple hand pump, similar to the one we still use to pump bicycle tires.Filming with Aeroscope, a cameraman did not have to turn the crank to advance the material filming, as in all cameras of that time, so he could operate the camera with both hands, holding the camera and controlling the focus.This made it possible to film with the Aeroscope hand-held in most difficult circumstances, as well as made possible to film from the airplanes, also for the military purposes.