The cameras will be used in orbit for 12 to 18 months. Only the camera bodies have been sent up to the ISS — instead of shipping brand new lenses, NASA will be reusing lenses and accessories already on the ISS that were launched with the Nikon D4 and D2Xs cameras.
The Nikon D5 cameras make up only a small part of the 7,400 lbs (3,350 kg) of cargo sent up on this mission.
Nikon DSLR cameras are being used to record images of both internal and external activities on the ISS.
The D5 will soon be used to shoot more photos like these, which were shot with existing Nikon DSLRs: