I have been searching through the Web to find an answer to this question, but to no avail. Maybe someone can help me. I have a Canon system where IS is in the lens, so it's easy to see when it's working. But, in the Olympus mirrorless IRC system with in-body image-stabilization, how does one know if IS is working? More specifically, if I hold the shutter button half-way down for a more than a couple seconds to get proper focus, exposure and composition, does the IBIS turn off or does it stay on? Any insights would be most appreciated.