The Nikon WU-1a and WU-1b are dongles for D3200 and D600 cameras respectively and allow a smartphone app to see the current viewfinder image, snap photos, and share them wirelessly. If you have a different Nikon DSLR you'll need the WT-4 Wireless Transmitter ($1000) or a WT-5A Wireless Transmitter ($877) for the same functionality. More »
