Logically, it would require far less muscle exertion to lock the camera still in relation to yourself in zero gravity. The issue I can see is your entire body moving relative to the subject or cabin, unless you were foot-clamped in. Most of the effort in hand holding a large camera lens combination is counteracting the down forces of gravity and keeping your muscle contractions relatively in balance against those forces.
I have no idea if the internal gyroscope in a camera is functional in zero gravity.
fjablo wrote:
RoamingScott wrote
I think the need for IBIS is largely obviated by zero gravity =) Is it though? I've been considering it but the movement of your finger, slight shakes from holding the camera, the shutter and in this case also mirror slap, they all cause the camera to move, even more so in zero gravity. I could see how IBIS systems might not work as well in that environment because they rely on gravity to some degree, but the issue with handholding longer shutter speeds is just as real from what I can tell. Happy to be proven wrong if there's any reliable info on this..