I just want to know how much magnification there is... if iI have a point and shoot camera and it has 10X zoom, i'mI'm seeing that the subject is "brought" 10x closer. So, what does a dslrdSLR telephoto lens need to be to bring the subject 10X closer? i I am looking to buy a 55x200 sony55-200mm Sony lens - will the subject be apprxapproximately 10x closer or...? Or 5x closer or 15x closer...? that is all we're trying to find out...