Drones are pretty cool tools for photography, but the problem is the payload capacity.
It takes a large and powerful drone to carry a decent SLR, but their are options out there for smaller cameras.
I fly actual helicopters for a living, and one thing that is important to understand is the legal and safety aspect of operating
a drone...ultimately, you become part of the Federal airspace system, depending on altitudes and your proximity to airports.
When I flew tours in Vegas, one of our pilots almost hit a drone over the city doing 140mph. It would likely have been fatal.
I believe newer drones have safeguards preventing their use in close proximity to Controlled airports and in areas covered
by FAA TFR's (Temporary Flight Restrictions). For instance, if their is a wildfire, a TFR goes up preventing the flight of drones
and non-essential aircraft into that area, but their are still morons who manage to do it, causing potential risks to aerial firefighting and police traffic.
The FAA has been cracking down heavily on drone use.
https://www.faa.gov/uas/ is a link that is provided by the FAA here in
the U.S to explain drone use and req's.
It is just a matter of time before a drone gets sucked through a Commercial jet engine or takes out a tour helicopter. Surprised it hasn't happened yet.