Important point, thanks for the input. Really, at f/2.8 with an image sensor that small the reasonable DOF will likely be much closer than a hundred feet, more like five feet or even less. So, unless you are flying in real close to inspect a bridge it's highly unlikely that at any more likely distance anything would be out of reasonable focus. Additionally, operating at a wider aperture like f/2.8 pretty much eliminates diffraction as a limiting factor. With my earlier drone, the
P4P which did have a variable aperture I usually set the aperture at f/4 to f/5.6 to avoid diffraction limiting.
In this video from a few years ago using the
P4P at f/5.6 it would be hard to complain about detail level.
Brian