The WT-5A Wireless Transmitter is designed for use with the Nikon D4 D-SLR camera.
HTTP Mode: Now you can use the web browser on your iPhone® and/or iPad® to operate camera controls or begin Live View shooting, including starting and stopping HD video and more.
PC Mode: Operate the D4 via Camera Control Pro 2. From one master camera, simultaneously release up to ten remote D4/WT-5A combinations.
Image Transmission Mode: Transmit images to an FTP server or computer two times faster than the Nikon WT-4A.