CamerRC, a Nikon DSLR Tethering software for Windows, just announced a new software release, version 1.5.0, which incorporates support the D5200, D600 and Microsoft Windows 8. Some recent additions also include LiveView & movie support, virtual horizon, rule of 3rds and golden spiral composition aids, saving of JPEG and NEF images to different locations, and automatic mirroring(backup) of your captured images.
Whether in the studio or field CameraRC is a reliable tethering solution for Nikon shooters. CameraRC is fully supported and is regularly updated.
CameraRC introductory video.
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Camera RC, Nikon, Software