My first and only time shooting at an airshow, some years ago, using schools Pentax and Sigma 75-300 - oh, didnt I feel like a badboy at the time walking around with that massive set up! 
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As you can see I didnt understand the concept of introducing prop blur, (or for that matter shooting at less than ISO1600).
Also, everything to the right of the white wingtip light in Pic 1 is fake.
