Guitar Oscillations Captured with iPhone 4

Original video description: I just happened upon this trick when testing what it was like filming from inside my guitar. *Note this effect is due to the rolling shutter, which is non-representative of how strings actually vibrate.


Tips:
• You must have the strings brightly backlit to get the camera to capture at such a high frame rate (pure conjecture). You can see how the effect fades when the buildings come into view.
• Use a pencil
*This was used with the front facing camera, try the back camera, it may capture better!


There is a heated discussion with *real science* over at reddit
http://www.reddit.com/r/reddit.com/comments/in2rc/guitar_string_oscillations_