If you are curious to see how the GH3 remote control works just watch these two vidoes. The first has been embedded here on top. The second can be found here: http://www.youtube.com/watch?v=od5fqlRba_g.
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Special GH3 page at Amazon (Click here) and a full Olympus presentation page at Amazon (Click here).
GH3 at Amazon (Click here), Adorama (Click here), Bhphoto (Click here) and in Europe at Wexphotographic UK (horrible price in UK!).