ggttc wrote:
Going to an airshow this weekend...( Air Over Georgia)...any of you folks have advice on shutter speed to get that blur on props? In my prior shots of prop aircraft the props are either stopped or invisible.
Thanks in advance.
Unless you're a master at panning, there's a good chance that with the shutterspeed needed to blur the prop, you'll also blur the aircraft (don't ask me how I know....).
If the aircraft are stationary, a slo-o-o-o-w shutterspeed with an ND filter on your lens, will give some degree of success.
I've only had one "practice session": we were near a forest fire and we could get to the bank of a small lake where the the helicopters came to fill up their buckets. While they were filling the buckets they hovered almost motionless, except for the blades, quite close to the water. It was a surprise and I was so not prepared, didn't even own an ND filter at the time.
A couple of years ago, at the airshow in Wetaskiwin, AB, we had chairs with adjustable backs. I'd set mine to lean back a fair bit, and took a good number of photos, all handheld. Sun behind us and the area where the planes did their stunts, in front of us. Bright sunny day, perfect for fast shutterspeed, and I got a good number of keepers.
The lens I used at that time was a Zuiko 4/3 70-300mm.
As to the exact settings, or even the exact ND filter to use if you go that route, my suggestion would be to try and get to the airfield early, and take some test shots. You can probably enlarge them on your LCD to inspect, or if you have the space in your camerabag, take a notebook or tablet along to view.
Weather and available light, even the direction of the light, play a role, but in general: slow shutterspeed (1/60, 1/100 second), medium aperture (f8, f11), and low ISO (100, 200). BUT: these are the settings from my memory, yours may work out totally different. Test shots is the key!