On Wed, Oct 12, 2005 at 11:45:57PM +1000, Rob Studdert wrote: > > On 12 Oct 2005 at 1:20, John Francis wrote: > > > > > I've just found time to clear off enough space from my hard drive > > to be able to take a first look at my weekend images. > > > > Here are five that caught my eye; (no cropping, just minor tweaks) > > > > <URL:http://panix.com/~johnf/PDML/NorCal/index.html> > > Image4 is amazing, the perspective compression really creates a weird view, > I'm > confused as to why only the black tips of the props can be seen fill circle > too?
That puzzled me, too. My guess was that this wasn't an optical trail of the black propeller trips (unlikely at 1/1250), but instead was a genuine effect - some sort of turbulence or condensation actually present in the air as it spills off the propeller blades.
