... surfing around and looking for the "big brothers in the sky" ... found (very) interesting details about the us-american drones ...I guess the link will be closed soon ...http://www.0x4d.net/files/AF1/R11%20Segment%2014.pdf
"That is a really great development and rather useful then sparkling led and aerobatic stunts ;-)
I will implement the same feature to my GluonPilot/EasyStar/Kodak Zx1.
@Pete: do you still use the standard lens on your camera or do you use any…"