It sticks out my mind that GD used the Viper digital movie camera. Not sure of the frame rate they used but super high like the retail price which is around one million dollars. The viper has a mechanical shutter for a more film like look with no blur.

I wouldnt be surprised if the Nike commercial was shot on the Viper too. The Red camera which is out now wasnt around at the time of its shooting I dont think.

Any body work for Panavision out there?

First time trying to attach photos so hopefully this will work.

Jeff, I am no LD expert, just a humble amateur. These pictures of me were taken in October 2008 by GolfGuru. I think they were taken up around the shutter speed you wanted on his Casio F1 camera that can take bursts at up to 1200 fps I believe.

Bugger, not sure I uploaded them. Idiots guide please?

Regarding getting a frame at impact - I was just pointing to the one issue (especially seen when taking a divot) where the clubhead slows during impact and the shaft bends back - once the ball leaps off the face - the clubshaft springs forward.

Yes, of course. The divot/clubhead collision vs the tee'd ball/clubhead collision. One causing more shaft deflection than the other.

If he's got the F1 then the still bursts are up to 60 frames per second. High speed movies on the other hand can make it to 1,200 fps. Although here I think fps stands for "fields per second". Apples and oranges. Film movie cameras would still be "frames per second" having a mechanical shutter and a true film frame

My Casio FH20 has a burst of still photos up to 40 fps which are far clearer than 280 fps in digital movie mode for some reason. No shaft blur what so ever. (The faster fps movie settings require a ton of light and are smaller files, despite the blur I find 280 to be the best rate.)

And yes in burst mode the shaft looks like a very in focus bent snake while in movie mode it seems a rather straightish looking blur. This when regarding the same person doing the same shot one after the other.

If this shaft deflection is an anomaly of high speed still photography then Hogan might have been wrong to change shafts after reviewing his photos for Power Golf. Ill let the sharpness of the focused still bursts rule and chose to think that Mr Hogan and Mr Kelley had it right. The shaft is a snake.

O.B.

This is might be the best example of shaft deflection with high speed video.
Go to the 3:30 mark of this clip of Zuback.

Snake Handler
 

Here are four photos O.B. Left took at Cuscowilla in our private sessions last month. They illustrate his points . . . and mine. Also, they give insight into the 'Shaft Bend' questions Mike O. asked above. FYI, these are Stiff shafts -- not Super Stiff or Tipped -- but they are Stiff (and not of the 'Super Senior' variety :laughing9 ) .



Downstroke





Release





During Release





Impact Interval

Readers who wish to enlarge can click on the thumbnails below. Left click and use the 'pg up' and 'pg down' keys to navigate between the photos.

:salut:

Yoda

In your series of photos, I can see a phenomenon that I have seem many times previously. Before release, the clubshaft is bent backwards and after release the clubshaft is bent forward.

The question becomes - how does one interpret this phenomenon. I personally believe that there is a shaft flexibility issue and a shaft elastic recoil issue in play that disrupts the 100% irefutable causal relationship between the hand thrust action (cause) and the clubhead's sweetspot movement in space (effect). I can picture an S-shaped clubshaft that is 100% rigid, where one can essentially ignore the strange snake-like shape of the clubshaft, and where there is still a 100% correlation between hand thrust forces (cause) and the clubhead's movement in space (effect). However, when a shaft becomes increasingly flexible then I believe that there can be a time-lag phenomenon where hand thrust forces do not have an immediate effect on the clubhead and where one cannot simply imply that a straight line drawn between the hands and the clubface sweetspot at any time point in the downswing accurately represents the reality between "cause" (hand thrust forces) and "effect" (movement of the clubhead's sweetspot in space).

I watched Jason Zuback give an exhibition as a long-drive competitor and as a trick shot artist. He had a special ultra-flexible shaft that could bend into a C-shape. When he swung with that rope-like club he could hit the ball >250 yards - but only if his timing was perfect. He had to get the rope-like clubshaft to become straight at impact - so that the clubhead became like a flying object perfectly timed into impact. However, during the downswing, the clubhead was lagging behind his hands by a variable amount that varied considerably from swing-to-swing, and therefore there was no clearcut relationship between effort and effect (clubhead's sweetspot movement in space) until impact.

Jeff.

Deja Vu All Over Again
 

Jeff,

As I've already explained twice in this thread, the Clubshaft is responding to the Sweetspot's Centrifugal Line of Pull. It is NOT creating it (as you continue to insist). In fact, this 'bass-ackwards' thinking is your fundamental error.

The Sweetspot is orbiting, and in so doing, is creating a Centrifugal Force (Clubhead Inertia resisting a change in its direction). The Clubshaft is supplying the Centripetal Force that enables that orbit.

In performing its function, the Clubshaft is stressed at the Top (Lag Loading / 7-19). This is the true Clubhead Lag, i.e., the Sweetspot seeking to maintain its in-line condition with the Pressure Point Pressure and thereby creating Shaft Stress. It is no less than the Secret of Golf (6-C-2-0/A). Ideally, this Stress is never 'Released'.

[And while I'm here: This Shaft Stress is not Accumulator Lag, i.e., the out-of-line condition of the Left Arm and Clubshaft -- that you misidentified as Clubhead Lag by reference to Photo #1 in your post #118 -- which is Released. ]

Where was I? Oh yes . . .

Centrifugal Force (Swinging) or Muscular Thrust (Hitting) is driving the Clubhead.

Not the Clubshaft.

I am not saying that Clubshaft properties -- materials, flex, etc. -- are not important. They are. But, not in the ways so often promoted. And . . .

Not in the way described by you.

:salut:

BTW, you state that you see in my photos a "phenomenon that [you] have seen many times previously. Before release, the clubshaft is bent backwards and after release the clubshaft is bent forward." Question: How do you explain "The Snake" (Photo #4 in my post #127 above), where "after release", the Shaft simultaneously is bent both backwards and forwards?

:scratch:

Please include the photo in your reply, and for the visually-challenged among us, please trace the Shaft with a yellow line. Thanks!

Whirling Rocks and Straight Strings
 

Trust me, Jeff, that rope being swung by Jason Zuback had no trouble staying straight. If you had some footage of that event, I'm confident your 'captured images' would attest to that. Swing a pen knife 'round and 'round on a string, and you'll get the idea.

Of course, you lose certain advantages, e.g., the rope acts as an Impact Cushion (6-C-2-C) and also, Clubface Control becomes problematic (at the very least, this True Swing procedure demands a precise Ball Location). In fact, the whole drill sounds to me like a good argument for stiff shafts.

:salut: