sentences:  This modification represents approximately 10% of the original cost of the camera.New D3 bodies still ship with the original buffer memory; upgraded models can be identified with a "2x" label in the storage card door.As many other Nikon film SLR (various modified Nikon F, F3, F4, F5) and digital DSLR cameras like the Nikon NASA F4, Nikon based Kodak DCS 460, DCS 660 and DCS 760, Nikon D1, D2X and D2Xs, the D3 is used by NASA, for example in Space Shuttle missions to the International Space Station.