By remotely causing a digital camera to take a long exposure, you all but eliminate any chance of "camera shake" due to pressing the digital camera's built-in shutter button.The live Wireless Remote Shutter is designed to provide a remote liveview preview from a camera's viewfinder on a color LCD. The Wireless Remote Shutter works only with DSLR cameras that have liveview functions. The cable is connected to a DSLR camera using an AV and remote cable. Camera Remote Shutter Release prevents camera shake for super telephoto shots, macrophotography, and bulb exposuresHigh quality assuranceWireless Remote Shutter gives you the flexibility to snap the shutter right when you need it, even if you're not behind the camera.