very easy by the operator and forth with the necessary features that must have a remote release. I had been a 6 remote timer function which I hold "only" trigger and could see him for long exposure. Then there was always the problem that I indeed could not see how long I release and it could not adjust. Also have long considered whether I have a remote release cable or a buy with Funkauslöser want me. Clear a remote control is more flexible, but I do not move 10 or more feet away from my camera, because that is then stolen probably faster than I can trigger. With a radio remote control I must the receiver still screws on the camera and I myself on my camera before the quick-release plate for the tripod on it. I'm super happy with this remote trigger .... because I can enter to the exact second, an exposure time, have a backlit display, can even enter a time delay and trigger multiple shots. I have looked in my search for a good Fernauslöser much on the internet and there is a video on the Internet for this remote trigger, where the functions are explained extensively. This video was the purchase criterion for me! I have not looked back!