Doug, with most of the planes, 1/60th would give you good blur, but with the Corsair I had to go down to about 1/15th of a second at times. Most of the guys around me who do this stuff all the time said usually between 1/30th to 1/60th. It was a lot like shooting birds in flight really. The jets were as fast a speed as you could get, usually over 1/1000th of a second.
