Sam.Henri

Hi, When I review an image in the camera, I can zoom in to check the focus for example. Either by using the back dial or by pushing the joystick. But it only zooms in to around 60% and thats not near enough to check the focus. So has anybody an idea how I will be able to zoom in a lot further? I have already seen it in different videos on YouTube that it is possible, but I just dont know how... Thanks in advance.