Recent Threads on Video Cameras
http://tt.tennis-warehouse.com/showthread.php?t=405536
http://tt.tennis-warehouse.com/showthread.php?t=431983
60p fps is slow for the fastest tennis motions, especially on the serve. One frame every 17 milliseconds. If the shutter is fast, so that the motion blur is small, 60 fps will show a lot. New DSLRs with 60 fps and fast manual shutters (1/4000 sec) would have almost no motion blur. But 60 fps is misleading on the serve because it takes only one frame every 17 milliseconds and things change too much in 17 ms. Jello Effect distortion, for example, showing false bending of golf clubs, is unknown without testing. For informative 60 fps videos, view the serve from behind in bright sunlight.
60p fps AUTO exposure control in late sunlight with an OK shutter speed. Examine stop action -
https://vimeo.com/46427326
[Vimeo does not play on my Samsung Galaxy S2 Epic smartphone. The best way to do stop-action single-frame on Vimeo is to click the play-pause button as fast as possible.]
Another 60p fps AUTO in brighter sunlight showing less motion blur. Some Jello Effect distortion makes the racket falsely appear to bend at impact.
https://vimeo.com/46427230
240 fps with a very fast shutter is very good. A frame every 4 milliseconds. Near impact on the serve the racket face angle still changes several degrees between frames. 240 fps shows nearly everything but it is not fast enough to watch the ball interact on the strings. Example videos of serves taken with a Casio FH100 and fast shutter speeds.
https://vimeo.com/user6237669/videos
Toly has been displaying some very informative composite pictures on TW from high speed video lately.
http://www.kinovea.org/en/forum/viewtopic.php?id=692
Excellent cameras with full
manual exposure control and very fast shutters (1/40,000 sec): Casio Ex F1 (2008], FH20, FH25 and the FH100 (2010). These models are discontinued, available used at higher prices.
Probably all affordable cameras with high speed video modes now available have
automatic exposure control and the fastest shutter speed is slower (1/1000 or 1/2000 sec) and
unknown. Shutter speed usually depends on the level of available light. Smartphones have fast shutter speeds in direct sunlight so that you can see the racket without too much motion blur. I can't be sure what the AUTO cameras will do - what shutter speed their software will select for given light levels.
If anyone has a Canon Powershot, check to see if your model has a high speed video mode. The 110 HS does and many other also. For many Powershot models resolution is only 320 X 240 at 240 fps and recording time is probably limited to only around 30 seconds. Shutter speed probably around 1/2000 sec in bright sunlight, but who knows without testing.
The Canon Powershot 110 HS is a big compromise for HSV, down from the Casio FH100 in many capabilities, but it might give you very useful information on the serve. $150 refurbished.
http://shop.usa.canon.com/shop/en/catalog/powershot-elph-110-hs-red-refurbished
I don't own this camera so I can't be certain of its performance in high speed video mode.
(Careful finding cameras at very low prices as some sellers seem to advertise, take the order and then make no attempt to deliver a camera. ?? Check the company on the internet and in Az customer reviews.)
For any camera that you are interested in search - Y
outube + camera model + high speed video + golf or similar Youtube searches. Look carefully at the motion blur.