I'm having a issue in the studio with my sony a7 ii. When I shoot in studio I'm having a issue with the reframing after I focus on the eyes. Lets say my setting is, f8 1/200s iso 100, the camera show me completely dark. When I half press the shutter, the camera lights up to be able to focus. Then, it goes back in the dark and I'm can't reframe properly. Does anyone as a solution, thanks.