(https://dl.dropboxusercontent.com/u/48247244/YUN00043.jpg for the actual file)
Seems to me the focus is too close, and needs to be further out. The flag isn't bad, but the background is soft even before zooming in.
Seeing as this is a fixed focus camera and very wide angle, Hyperfocal Distance is largely irrelevant I should think.I would imaging it would be very difficult to get consistently good image quality from a moving H.
There is basically a simple lens in front of the sensor.
Its not on a tripod, its on a moving H, trying to compensate for pilot inputs as well as wind.
I think it does a great job for what it is for the price.
Good quality DSLR camera lenses have vibration reduction built in at a large cost.
Maybe if the lens was focused about 1/3 of the way into the scene, more depth in the scene would be in focus.
Looks to have been possibly focused a little too close.
Hyperfocal Distance Explained
I have $2000 dollar lenses that have CA, it can usually be removed in PP. Yes there is distortion but there always will be with this type of lens. This though is not the issue the OP was referring to.That photo is a prime example of the issues with these cameras, the lens doesn't have enough resolving power and suffers from distortion once you are outside of the middle third. it also has a large amount of Chromatic Aberration.
Which was exactly my point, all lenses have some CA which was not a problem the OP was referring to so kind of unnecessary.That's cute your $2000 lens. $2000 doesn't even get you into the door to look at the lenses I use and yes there is CA along with distortion and a lack of resolution. And FYI ALL lens have CA its just that good manufactures make it outside the image circle