1.What is the rectangle that I can move in the live viewfinder of my camera ? Is it the equivalent of the AF points in the regular viewfinder ? If so then it is even more useful as it can be moved more than the fixed points you have to choose from ? Oh and is it for spot metering as well ? 2.When shooting a landscape, how do you know which af point to choose ? 3.What is focusing on infinity ? 4.Do you select a focus point everytime ? 5.When does manual focus is necessary ? I understand the idea of focusing, but when applying that knowledge with my camera, I'm lost, I wish there was a video explaining it all. Thanks for all your help !