Do you reuse the cameras after they come back from space? Do they even come back at all or are they jettisoned to reduce weight?
The cameras that come back are evaluated for damage. Depending on the condition the camera may fly again. The space environment (both inside the vehicle and on spacewalks) is tough on the electronic cameras. The radiation damages pixels on the sensor. Sometimes the damage is so great that the camera does not fly again.
Read the article at: PopPhoto.