The German magazine Spiegel published an article with images taken from the ISS where you can spot several Nikon cameras and lenses. Here are some of the captured images:
Picture taken with the 8mm fisheye lens
Self-portrait of astronaut Don Pettit
Stacked multiple shots with 30 seconds exposure
North America from space
Northern lights
Storms on earth
Images from space are transfered to the ground station once a week in RAW format
Infrared image of the jungle in Guatemala
Aurora from space (HDR image)
Images credit: NASA
