Hallo everybody..... I am just pondering and checking on this fucntion,...I was wondering why do we still need to use it? With the GX1, we are able to adjust the size area of focus on the touch screen easily, and the spot where we want to focus quite easily. When we are doing this on screen focus, does the GX1 already automatically calculate the focus area information to preset the shutter speed and so on? I can only imagine the only reason we want to lock AE and AF is to capture the light info, set the aperture and ISO based on a subject,...and keep this settings throughout the time when we are moving around in the area we are capturing and so on. Is my understanding correct?