Thanks Lance - a good bit of deduction.

3 is a stand-out for me Roy.

They really do justice to the marvellous world of nature!

Especially for Button, now that he's won the F1 GP here.

I quite like the de-saturated look and feel of the first shot Andrew, it suits the subject. The BW shots, as always, make a viewable series.

Matt,

Rotorcraft are somewhat different, in that the main rotor rpm is generally in the mid hundreds - unlike a prop (be it piston or turboshaft, reduction or direct drive).

Freezing the rotor in an image thus becomes a distinct probability, and a whole lot earlier in terms of shutter speed than it would for a prop (assuming the prop is not idling of course).

Even at 1/60th shutter speed, a rotor at 600 rpm (thus only doing 10 rpm per second) will merely be completing roughly one sixth of a single revolution. Halving the shutter speed will double the arc travelled by a blade - say one third of one rev.

This does not bode well...

The collegiate, cooperative approach coupled with diverse views (not to mention the knowledge and talent) here is what makes it a superior forum, IMO. Good stuff.

Thanks Yves - talk about learning something new every day...

Simon,

I should add here that I didn't intend that to be the outcome either. I didn't explain myself well I'm afraid.