Summary: The Sony GPS CS1 satellite navigation system can be useful for the photographer that travels a great deal. Possible uses may be for the photographer that wants to chronicle useful areas of the world to take pictures. Images can be tagged to the map as a visual reminder of the area. Should you be taking pictures whilst travelling, the system can essentially track your course.
Pros: Useful for tracking locations, Saves time on noting location details
Cons: Takes a while to find the location, Can struggle if in a difficult spot, Lacks export options for maps