MC-30A remote cord for Nikon cameras with ten-pin remote terminals (D4-series, D810&D800-series, D3-series, D700-series). The MC-30A can be used to: – operate the camera remotely when taking photographs at close range and in other situations in which the slightest camera movement would produce blurring, and – keep the shutter-release button pressed for long time-exposures (bulb) and trust photography.