V bistvu je stvar sofware-a. Hardwarsko bi lahko tud "navadna" štirica to imela, ker izkorišča giroskop, ki ga ima tudi štirica.
evo:
Apple's iPhone 4S Camera Introduces Video Stabilization, Fulfills Patent
Bob Mansfield, Senior Vice President of Hardware described Apple's fulfilled patent on video stabilization in Apple's new iPhone 4S video this way: "We know that people love to shoot videos on their iPhone, so we made some big advancements here too. iPhone 4S records 1080p HD video at 30 frames per second,
plus the gyro along with incredible new software will stabilize your video as you shoot it. This will make your videos run a lot smoother." The bottom right frame of the collage below shows Apple's video pointing out "Unstabilized/Stabilized."
http://www.patentlyapple.com/patently-apple/2011/10/apples-iphone-4s-fulfills-a-series-of-camera-patents-more.html