Anyone know whose copter this is? It looks like the legs might revolve with the camera and its gimbal? Arms fold too? Camera seems resting on some sort of CG slider rail too. I know the camera and lens is a Nikon D500 20.9MP body ($2,000) plus their Nikon 20mm f/1.8 lens ($800). Weight 1,180 grams combined. 70 degree field on the D500 DX body, so a bit tighter than the 84 degrees of the P4.