Hi there am new to the world of drones. I am just trying to find out if having trees and or hills effecting your line of sight will have an impact on video quality. I am wanting to use the drone to check cattle on our property the furthest it would ever be from me would be around 2.5kms. From where I would be controlling the drone is the most elevated position on the property. The property slopes away down to a creek then rises on the other side to around the same level as I would be controlling it from.