Originally Posted by Elkhornsun
For aircraft with rotors or propellers slower shutter speeds show their motion and provide a much more realistic look. The often requires shutter speeds under 1/200 and in bright sun even at ISO 200 there is the need for ND filters to reduce shutter speeds to this level.
A lot of great images are taken head on or slightly to one side. More taxing on the camera's AF but no need to pan. Helps to use the continuous setting and take a burst of 3-5 shots to insure at least one is well focused.
The "sunny 16 rule" states that in full sunlight, one can get real close to the proper exposure with a shutter speed of 1/100 at f16 using ISO 100. This will get you into the right shutter speed to show props turning etc. If you where to use a polarizing filter, the exposure would be less yet allowing you to use a still lower shutter speed.
For most of the images I have seen on the thread, focus is not a problem as the subjects are all out at infinity, so just turn the AF off, set the lens at infinity and blaze away, especially if you are shooting at f16 or better.
Depending on the speed of the subject as it passes by I would most certainly pan along with it, helps one to position the subject correctly in the frame.