<p>It is down to the raster/line speed of the CMOS array in your camera - it does not expose the whole thing at once, it scans from left to right and downwards. For even more amusement google for iPhone propellor videos, such as <a href="http://www.youtube.com/watch?v=ZAbj3nL_i58" rel="nofollow">this one</a>, or in fact any video of oscillating or moving objects.</p>

<p>The solution is to get equipment with slightly more upmarket sensor arrays.</p>

CC BY-SA 3.0
2012-06-22T13:48:46.150Z
2012-06-22T13:48:46.150Z
Dr Mayhem
<p>Look in your video editing software for "Rolling Shutter" correction.  That will help, but probably not completely eliminate, the problem.</p>

CC BY-SA 3.0
2012-07-08T19:44:53.237Z
2012-07-08T19:44:53.237Z
NetFool
<p>This "effect" is called <a href="http://en.wikipedia.org/wiki/Rolling_shutter">Rolling Shutter</a>. It is common in most CMOS camera sensors because they don't capture an instantaneous image, instead they do it progressively over a period of time. CCD sensors do not have this problem as they do have instantaneous capture.</p>

CC BY-SA 3.0
2012-06-22T15:51:39.203Z
2012-06-22T15:57:56.537Z
2012-06-22T15:57:56.537Z
Miguel
<p>I'm using a Kodak Zi8 at the moment, but I've noticed this effect on other cameras. When a camera is moving it occasionally produces fun house mirror-style effects. It makes things appear to stretch and shrink. Is this a software issue or a problem with cheap components? Are there any cameras that don't produce this effect?</p>

<p>See example video:
 <p><a href="http://vimeo.com/44503828">Kodak Zi8 shake issue</a> from <a href="http://vimeo.com/reedlaw">Reed Law</a> on <a href="http://vimeo.com">Vimeo</a>.</p></p>

<video><digital-recording>
Camera shake produces ripple-like effect
Reed G. Law
# Camera shake produces ripple-like effect

(Asked by: username_0 on 2012-06-22)

I'm using a Kodak Zi8 at the moment, but I've noticed this effect on other cameras. When a camera is moving it occasionally produces fun house mirror-style effects. It makes things appear to stretch and shrink. Is this a software issue or a problem with cheap components? Are there any cameras that don't produce this effect?

See example video:

[Kodak Zi8 shake issue](http://vimeo.com/44503828) from [Reed Law](http://vimeo.com/reedlaw) on [Vimeo](http://vimeo.com).

**Tags:** video, digital-recording


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## 3 answers

### Answer by username_3 on 2012-06-22. Score: 8 | Accepted answer

This "effect" is called [Rolling Shutter](http://en.wikipedia.org/wiki/Rolling_shutter). It is common in most CMOS camera sensors because they don't capture an instantaneous image, instead they do it progressively over a period of time. CCD sensors do not have this problem as they do have instantaneous capture.


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### Answer by username_1 on 2012-06-22. Score: 4

It is down to the raster/line speed of the CMOS array in your camera - it does not expose the whole thing at once, it scans from left to right and downwards. For even more amusement google for iPhone propellor videos, such as [this one](http://www.youtube.com/watch?v=ZAbj3nL_i58), or in fact any video of oscillating or moving objects.

The solution is to get equipment with slightly more upmarket sensor arrays.


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### Answer by username_2 on 2012-07-08. Score: 1

Look in your video editing software for "Rolling Shutter" correction. That will help, but probably not completely eliminate, the problem.


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