"Graeme Hogan" wrote in message
u...
How come you can see a propellor in the arc.

"Glenn" wrote in message
...

Shutter speed was too slow. The prop has done more than a 360 degree circle
and the prop you can see I guess is how it is recorded when the shutter
passes over the sensor at a certain time.

or maybe it's photoshop. That one comes out a lot when people start to
question an image.:-)