Hi all. I have a photo of an aircraft snapped in flight from another
aircraft. I would like to enhance/fake the spinning prop effect. To do
this, I need to make several oval selections. The tip 5 inches of the prop
is painted white, then there is a one inch white strip below the white tip.
When a photo is taken with a shutter speed slow enough to create a full
rotation of the prop blurring' ( 1/60th shutter or slower depending on
engine rpm and number of prop blades) you get a sort of white disk with a
smaller white disk inside it representing the painted tip of the prop. Also
these two disks are sharp edged, and are usually in some degree of
I can't figure out a good way to generate these two disks (selections)
Anyone know how I could achieve this?