From the backgrounder PDF:
The cameras new Anti-shake function minimizes the effect of camera shake, a slight blurring of the image when the camera is handheld, to provide the sharpest image possible. The Anti-shake system is valuable when shooting at long focal lengths or in low-light conditions without a tripod. This allows the camera to be handheld with exposures approximately eight times longer than usual. When using the camera at the telephoto setting, approximately 90% of the images recorded will be sharp with a shutter speed of 1/25 second. The Anti-shake button glows to indicate the function is active.
The Minolta method sounds better than previous methods (even Steadicam <
http://www.steadicam.com/>), primarily because you are stabilizing less mass. Generally images look good with these methods, except in extreme situations, when it is limited by the coverage of the lens–you can get fall-off or vignetting if you give it a good shake, or tilt while you shake, and especially if its auto-focus continues to adapt during the exposure.
Imagine looking through slightly-wavy glass; the view looks good, unless you move your head. While an exagerated example, moving the film plane during exposure will have that effect because of lens aberrations.
It’s only an f/2.8-3.5 lens; in a crunch, an Olympus with an f/1.8 lens would give you better than twice as fast of a shutter.
Assuming the lens is well corrected, and assuming I had $1300, I really want one.