Roating Hips On Downswing

Shootin4par,

I really understand how deceptive a short mm lens is. I will TRY (no promises) to shoot the exact same set up with a longer lens so we can see the difference--not exactly easy because I don't know if I have enough street to shoot it with more zoom. It will make me look like two different people on your "closed stance" thing. (Or, perhaps I can find another video with a golf club laid at my feet.)

By the way, I don't know if you are using a video package, but if you are, you may want to try the experiment yourself and post your results.

Theo

theo,
I have enough experience with the video camera to know you are closed, draw a line across your toes and see where it ends up

Shootin,

Auurrrggghhh. No, you don't understand. Please, please please. Get your self a camera with a zoom and experiment. Take some photos at 30mm. Take them at 50mm. Take them at 100mm.

From your logic I'm standing on a trapazoid mat. The sides of the mat look to also be pointing at the poles running up the side.

Theo

Okay,

As and engineering/marketing guy, I've inspired myself.

To get a handle on perspective, you need to realize that all photos have a vanishing point. (Google vanishing point). All parallel lines will seem to merge at the vanishing point. Thus if I am parallel down the course, my toes should be on these lines.

So I have put lines on all of the obvious parallel lines, which allows you to see where one toes was vs the other. This is attached. Now the mat was a bit skewed and the fences on the course aren't perfectly parallel, but let's take this at face value and say "good enough."

If you look at the lines, my left foot is approximately 1/2 inch in front of my right foot. Let's round this to an inch. My stance is 24 inches. The ArcSin of 1/24 = 2.4 degrees.

Okay, I wasn't parallel. I was 2.4 degrees closed. (Not really, since the mat was skewed.) Most people can't see 2 degree change in direction, but let's say I was. This means that over a 240 yard drive, by ball would land 10 yards to the right if I hit straight. I am more than 30 yards from the side fence.

Theo "I Am Finished" Logic

Attached Images

vanishing point.JPG (46.5 KB, 16 views)

shouldnt there be lines running to the center of the picture? your camera angle points towards the polls, but maybe you will argue with me on that one too, your feet go with the camera angle