I bought the trigger for my Canon EOS 100D and he arrived after about one and a half weeks since it was shipped from China. Well packed and brought with inserted battery from the small padded envelope, I have of course tried it directly. Without any waiting time you can use it only at the camera remote control shooting mode must be set, but this is done in a second. There are two modes, a time will be triggered directly, once after two seconds. In video mode, the device works, the first modes starts filming, the other triggers. As is controlled via infrared, you have to hold down the shutter directly to the camera, or to the receiver of the camera, which is I have to myself first find out: D
For less than 3 euros I can remote trigger more than recommended.