VIDEO: Guitar string oscillations captured with an iPhone 4

Found this pretty cool video doing the rounds this morning. It was filmed with an iPhone 4 from inside the body of an acoustic guitar, looking out at the strings through the soundhole.

The crazy string wobble is caused by something called the Rolling Shutter effect. The iPhone 4 uses a CMOS sensor which, if the light and conditions are right, can force the distortion.

(Via: Kottke)