The 36" long Hasselblad Release Cord X for X1D-50C, 907X 50C & 100C Camera plugs directly into the camera's microphone input port. Once plugged in, the cloth-wrapped cable minimizes camera shake since you are not pressing directly onto the camera's shutter button. With the camera set in auto focus mode, you can press the single-button remote to engage the auto focus and fire the shutter. Holding the shutter release's button down with the camera set in continuous capture allows you to fire multiple frames, and in manual focus mode, you can fire the camera automatically.