Designed to be compatible with most Canon and Nikon DSLR cameras, Sanho's HyperDrive iUSBportCamera ($300) turns your iPad into a remote control for your camera, as well as a viewer. Some of the features include the ability to instantly and wirelessly transfer shots from your camera to your tablet, control photo settings remotely, view a live video feed as it's being recorded, and more. It also connects to flash drives and hard drives via USB, allowing…