Aerial photography with a remote controlled helicopter

We see more and more the appearance of small drones with onboard cameras at affordable prices. But if you want professional photography with flying machines remotely, they are not powerful enough. If you want to ship a box type Canon 5D markII, you need a tailor-made helicopter. It's been years that I care about and I started to take photographs with radio controlled helicopter carrying a Canon 5D markII. As a photographer this is exciting because it offers a new dimension to make shots. It takes time and experience to learn, it is not so easy to understand where you should position the helicopter from the ground. Technically it is much more complicated than that in the air. Flying a helicopter is not learned in a few weeks but in months or even years. The machine requires maintenance, overhauls ... There are many safety rules to follow when shooting. Advantages is that it is very manageable, much more than life-size helicopter.