High Speed Video Only - Any experience with the Canon PowerShot ELPH 100 HS? - AVS Forum
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post #1 of 8 Old 03-17-2013, 06:07 AM - Thread Starter
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Only with regard to the high speed video performance - The Canon PowerShot ELPH 100 HS might be a candidate as a very low cost high speed video camera with fast shutter speed resulting in small motion blur. Some videos on a golfing forum show that the shutter is fast enough to see the club shaft and head. The exact shutter speed/motion blur would probably have to be measured as it probably cannot be found in available specs.

See reply #755.
http://www.golfwrx.com/forums/topic/250245-casio-camera-thread/page__st__750

See reply #8.
http://www.golfwrx.com/forums/topic/791115-cameras/page__p__6415201#entry6415201

I am buying a used Canon PowerShot ELPH 100 HS for $80 to give it a try.

Does anyone have experience using the Canon PowerShot ELPH 100 HS model for high speed video?

Any issues or problems that users should be aware of?
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post #2 of 8 Old 03-17-2013, 06:46 AM
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http://www.usa.canon.com/cusa/consumer/products/cameras/digital_cameras/powershot_elph_100_hs#Specifications
Under "Super Slow Motion" it says 640x480 at 120fps or 320x240 at 240fps.

Bill
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post #3 of 8 Old 03-17-2013, 08:47 AM
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Quote:
Originally Posted by bsprague View Post

http://www.usa.canon.com/cusa/consumer/products/cameras/digital_cameras/powershot_elph_100_hs#Specifications
Under "Super Slow Motion" it says 640x480 at 120fps or 320x240 at 240fps.

Bill

That is a real issue: low resolution video.

The Panasonic LX7 and FZ200 shoot at 1280x720 at 120fps. In bright light the cameras will use fast shutter speeds in that mode.
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post #4 of 8 Old 03-17-2013, 10:22 AM - Thread Starter
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Quote:
Originally Posted by markr041 View Post

That is a real issue: low resolution video.

The Panasonic LX7 and FZ200 shoot at 1280x720 at 120fps. In bright light the cameras will use fast shutter speeds in that mode.

The main issue here is

What very cheap camera might introduce people to high speed video analysis of athletic motions such as golf, tennis, baseball, etc. ?

The issue of a fast shutter speed to reduce motion blur is very important. What is the shutter speed of the LX7 and FZ200 in high speed video mode in bright sunlight? As for many other AUTO exposure control cameras, I have tried to find that information and could not.

Since this shutter speed information is basically never available for high speed video mode with AUTO exposure control cameras, how can you get some idea of the shutter speed? Look for Youtube or Vimeo videos that might show the faster shutter speeds. Since more high speed video cameras have probably been purchased to video golf swings than for any other application, golf is a good place to look. Search - camera model + golf + high speed video, etc. Side view only, in bright sunlight.

For example, this video for the Canon Powershot ELPH 100HS of a golf swing from the side on a bright sunny day shows small motion blur and would be very useful for examination of many athletic motions.
http://www.youtube.com/watch?v=31ypqx5pbsE&feature=player_embedded

I have looked for similar videos for the Panasonic LX7 and FZ200 but could find none. Can you find any HS videos clearly showing the best motion blur?

Resolution While we all prefer attractive, high resolution videos, for accurately seeing tennis rackets, golf clubs and the important body parts, hands, arms, etc. low resolution video is adequate for the analysis of athletic motions. https://vimeo.com/user6237669/videos

Jello Effect - For higher resolution cameras the extra lines of resolution are likely to increase Jello Effect distortion from the 'rolling shutter' readout process. Can't find JE distortions in the specs or reviews for HSV mode - JE distortion has to be tested under similar conditions. https://vimeo.com/25242212

Cost - Also, there are many people who might give high speed video a try for, say, under $150, but fewer people who would pay over $300 to give it a try. These Canon Powershot ELPH 100HS cameras are now available for under $150 new and under $100 used. About what is the price for the LX7 or FZ200?


(I don't know how to get and display one frame from the above Youtube video in this thread - appreciate information on how to do it.)
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post #5 of 8 Old 03-17-2013, 01:42 PM
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How about hummingbirds' wings?

Here is a bright-light video of humingbirds shot at 120fps 720p with a Panasonic FZ200:

So, press the pause button and see what a hummingbird's wing looks like while in flight. is that stop-action capability enough? I would expect that a hummingbird's wing moves faster than a golf swing.
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post #6 of 8 Old 03-17-2013, 02:23 PM
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I looked at the Youtube videos - they are so low-resolution everything is blurred.

Here is a simple test - very fast broom swings up close and indoors shot at 120fps 720p with the LX7. You can see the stripe on the broom handle. There is some blur (this is not the brightest of light):



Choose 720p.
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post #7 of 8 Old 03-17-2013, 03:10 PM - Thread Starter
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I looked up the hummingbird wing tip speed and found one estimate of from 300 to 500 inches per second. The wings oscillate.............. The wings are too blurry for me to get an estimate for the motion blur. If 1/2" (?) the shutter speed might be roughly 1/1000 sec. ?

A golf swing is better known and the club head is a good object for estimating motion blur. The head of a golf club has a speed on the order of 100 MPH or 1760" per second more or less. A golf swing is much faster than the broom handle.

The resolution of the Canon PowerShot ELPH 100HS is only 320 X 240 but I believe that will be useful based on the golf video. Hopefully, that low resolution golf video example would have looked better with front lighting.

With my Casio FH100, I find 448 X 336 at 240 fps to be fine for my stroke analyses. See samples, earlier thread. I have shot some 420 fps with 224 X 168 and find it useful but the resolution is certainly rougher. I have not yet used the 1,000 fps 224 X 64 for tennis. 1,000 fps seems interesting for a close up of a golf club head hitting a golf ball.

The price of discontinued Casio FH100s has risen to almost $1,000 new and several hundred used. The cost of the Canon PowerShot ELPH 100HS is as low as $80. But what is the motion blur? What are the Jello Effect distortions like?
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post #8 of 8 Old 03-22-2013, 08:58 AM
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The new Fujjifilm FinePix S8400W has a 480fps mode.
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