Just curious to know how you focus when you're shooting. Tap to focus then shutter release and viewfinder to shoot? Tap to shoot? All in the viewfinder? Also, if you do it all through the viewfinder, how do you tell the camera what object to focus on? I'm coming from a Canon DSLR, where I looked through the viewfinder, and used the dials to select the focus point. Wondering what the equivalent action will be when my OMD gets here. Thanks.