In SteadyShot INSIDE mode, what is the maximum shutter speed with hand-held shooting?
This cannot be categorically answered, since it depends on the zoom settings and/or differences among individuals. Generally speaking, the limit of shutter speed is equal to 1/focal length (rule of thumb). The focal length of the lens should be multiplied by 1.5 when using DSLR with APS-C size image sensor to have the equivalent focal lenght on a 35mm format camera (full frame). Referential correction effect is equivalent to a maximum of 4 stops slower shutter speeds than the above-mentioned.