Http://shashinki.com/shop/phottix-d3100-battery-grip-nikon-d3100-d3200-digital-camera-p-7729.html This product stated it includes the usb cable to connect to Nikon D3100 and D3200 camera body. Does this means this battery grip can only be used when the usb cable are connected to the camera? I never own any battery grip so I was curious as I thought battery grip can be used without any usb cable connected to anywhere.
См. статью: Battery grip for Nikon D3100?