I find the trigger and use it perfectly with a Canon 7D. He works Supergut and the 2-second delay are ideal for the trigger hand to hide even more quickly. The specified range of 5 meters, I can confirm. The camera has always triggered that you have to stand at a certain point I can not confirm. The intricate open the battery compartment I can not confirm. With a little bit of feeling, you can open the door without any problems and heal fingernails. The practical bag for the belt of the Camera is ideal. Clearly 5 stars and a buy recommendation. Price / performance ratio.