Another option available is the GeoPic II from customidea.com this is a device designed specially for the Nikon D3, D300 and other pro cameras. This cunning little GPS receiver is located in the flash shoe with just a short cable to the connector on the D300.
The GeoPic II is designed specially for tagging with digital cameras as can be seen from the design locating in the flash and the neat cabling. But it is not just the hardware that is set up specifically for digital imaging the functionality is too. The GeoPic II has three operational modes: Low Power, the GPS is only active when you are about to take a picture; Continuous, the GPS is on all the time; and Freeze, the GPS is off but the last position is reported. This last mode allows you to take pictures indoors or in areas where there is no GPS signal and still tag your images.
This solution comes at a cost though. The GeoPic II uses power from the camera and thus will shorten the operation of the camera. The GeoPic II is available for £200.
Apart from the GPS side of things the D3 and D300 are stunning cameras, with lots of new and improved features. My favorite was the Live View on the high density 3 inch LCD display. It also has video output to a HD TV using a HDMI connector. Helping you make use of the 12.3 megapixel CMOS sensor. I also tried out the 18-200 VR lens and the 105 VR Macro lens on my D70 and these functioned really well, both in terms of focusing speed, operation at slow shutter speeds and sharpness.
My Christmas list is in preparation... Nikon D300 with 18-200 lens and 105 macro to back it up. What's that I heard my wife say? Something about Hell and freezing... :( Maybe I can persuade Nikon to let me test one.
In the mean time if you can get to Olympia in London tomorrow (November 28th) you can see the new Nikon cameras for yourself.