Answers.Body: <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>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2012-06-22T13:48:46.150Z
Answers.LastActivityDate: 2012-06-22T13:48:46.150Z
Answers.UserDisplayName: Dr Mayhem
Answers.Body: <p>Look in your video editing software for "Rolling Shutter" correction.  That will help, but probably not completely eliminate, the problem.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2012-07-08T19:44:53.237Z
Answers.LastActivityDate: 2012-07-08T19:44:53.237Z
Answers.UserDisplayName: NetFool
Answers.Body: <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>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2012-06-22T15:51:39.203Z
Answers.LastActivityDate: 2012-06-22T15:57:56.537Z
Answers.LastEditDate: 2012-06-22T15:57:56.537Z
Answers.UserDisplayName: Miguel
Body: <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>
  
Tags: <video><digital-recording>
Title: Camera shake produces ripple-like effect
UserDisplayName: Reed G. Law
ThreadText: # 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 [username_0 Law](http://vimeo.com/reedlaw) on [Vimeo](http://vimeo.com).
  
  **Tags:** video, digital-recording
  
  
  ---
  
  ## 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.
  
  
  ---
  
  ### 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.
  
  
  ---
  
  ### 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.
  
  
  ---
  
  