anyone ever measured the RPM's they can impart on a ball with their spin bowling?
i bought a new camcorder the other day, its a Sony CX100 1080 HD camera, its by no means a top of the range model, but its pretty well packed with features and the picture quality is incredible! anyway, its got a feature called "Smooth Slow Record", which got me intrigued!
what it basically does is film at 240 frames/sec (compared to 60fps normally) for a 3 second burst, then plays those 3 seconds back over 12 seconds in slow motion. you can choose to record either the 3 seconds BEFORE you hit the record button, or the 3 seconds after. the before function is awesome, you can point the camera at something, wait for the action to happen and then capture it in hindsight, rather than having to anticipate it!!
so what i did was record me spinning the ball from hand to hand with my wrist spin action, and put a strip of white tape on the ball at one point. as soon as i span a good one id hit the start button and it would capture the 3 seconds before i hit the button, which is just long enough to get the previous spin attempt. download this onto the computer and flick through it frame by frame and count the revolutions the ball makes, and then compare this to the clock at the bottom (which reads to a hundredth of a second), and then calculate the RPM on the ball with some simple maths
my leg break action spins at approx 240rpm, and my flipper spins at approx 230rpm (i say approximately because you still dont get the tape on the ball ending at the exact same position in the frame as it started at, you have to read between the lines a little).
just wondering if anyone else has ever measured the revs they can put on the ball, or if anyone else with a decent camcorder fancies trying!! i tried doing it with normal 60fps shooting, and it doesnt really work, i found it too hard to determine how much the ball was moving between each frame (i dont think my computer actually shows individual frames, it seems to jump about 3 frames at a time, im sure there is software that lets you go 1 frame at a time though.).
i tried to measure Shane Warnes revs on a piece of high definition slow motion footage from the last Ashes. but there is no marking on the ball to reference its position so you cant count the revs. which is a shame, im tempted to email Sky Sports and ask him to do it with tape on the ball in front of one of their cameras since he is commentating for Sky Sports right now, and theres so much rain that he cant have anything else to do all day! then i can compare my spin action to the great man himself
i bought a new camcorder the other day, its a Sony CX100 1080 HD camera, its by no means a top of the range model, but its pretty well packed with features and the picture quality is incredible! anyway, its got a feature called "Smooth Slow Record", which got me intrigued!
what it basically does is film at 240 frames/sec (compared to 60fps normally) for a 3 second burst, then plays those 3 seconds back over 12 seconds in slow motion. you can choose to record either the 3 seconds BEFORE you hit the record button, or the 3 seconds after. the before function is awesome, you can point the camera at something, wait for the action to happen and then capture it in hindsight, rather than having to anticipate it!!
so what i did was record me spinning the ball from hand to hand with my wrist spin action, and put a strip of white tape on the ball at one point. as soon as i span a good one id hit the start button and it would capture the 3 seconds before i hit the button, which is just long enough to get the previous spin attempt. download this onto the computer and flick through it frame by frame and count the revolutions the ball makes, and then compare this to the clock at the bottom (which reads to a hundredth of a second), and then calculate the RPM on the ball with some simple maths
my leg break action spins at approx 240rpm, and my flipper spins at approx 230rpm (i say approximately because you still dont get the tape on the ball ending at the exact same position in the frame as it started at, you have to read between the lines a little).
just wondering if anyone else has ever measured the revs they can put on the ball, or if anyone else with a decent camcorder fancies trying!! i tried doing it with normal 60fps shooting, and it doesnt really work, i found it too hard to determine how much the ball was moving between each frame (i dont think my computer actually shows individual frames, it seems to jump about 3 frames at a time, im sure there is software that lets you go 1 frame at a time though.).
i tried to measure Shane Warnes revs on a piece of high definition slow motion footage from the last Ashes. but there is no marking on the ball to reference its position so you cant count the revs. which is a shame, im tempted to email Sky Sports and ask him to do it with tape on the ball in front of one of their cameras since he is commentating for Sky Sports right now, and theres so much rain that he cant have anything else to do all day! then i can compare my spin action to the great man himself