As you can see from the graphs, the dual I.S. is pretty effective and provides 3-4 stop image stabilisation when compare to with no image stabilisation. What is more interesting is that the results from the dual I.S. is very similar to the latest Olympus 5 axis IBIS, maybe even slightly better at extremely slow shutter speed. This is pretty impressive consider how impressive the Olympus 5 axis system is.
ephotozine (12-35mm, 35端): .IS Off completely (GX7*) - slowest shutter speed - 1/25s most shots sharp. .Lens based IS (GX7*) - slowest shutter speed - 1/20s .Sensor only (GX8) - slowest shutter speed 1/20s most sharp .Sensor and lens combo (GX8) - slowest shutter speed - 1/15s .Olympus OM-D E-M5 Mark II - slowest shutter speed - 1/8s
photographyblog: Similarly, the combination of a Lens Optical Image Stabiliser and a Body Image Stabiliser in the world's first Dual I.S system isn't quite as effective as it sounds. Sure, it moves things on for the Panasonic system in comparison to the rest of their current range, but the company and their new system is still very much playing catch-up with Olympus' market-leading 5-axis stabilisation.