Given otherwise the usual 200 euros for battery handles the brand manufacturer that is very impressive for a little over 30 euros. If you disable the autofocus on the camera and the main switch of the battery grip is set to "On", you can trigger the camera via infrared remote control. The time delay is not so stupid. Unfortunately, Canon has the unsightly construction property that instead of the battery in the camera bulky plug the battery handle occupies the battery space and you do not know what to do with the battery cover of the camera. Other manufacturers have contacts at the bottom of the camera and the battery grip would fly about storage space for covers that must be removed and otherwise only loosely. Here would be still possible optimization. The trigger on the handle is a bit rickety. But the camera is not much better.