What sort of lens (mm wise) do you NORMALLY use for portrait photography, and how far away are you usually from your subject? The reason I ask is I am an aspiring portrait photographer (very long way away from being one), and I want to know kind of what the sweet spot is mm wise for a digital camera (1.5 sensor). Do you usually find yourself shooting between like 50-100? I'm looking at a lens combo (like 18-55 and 55-200), but I don't want a setup that's going to make me have to swtich back and forth between two lenses all of the time. I also know a prime lens (like a 50 or an 85) is what true professionals use, but for amateur, fun work (photos of cute girls in my class, my nephews, etc.), what would be a good lens? I also tried looking under the post of "great portraiture techniques" but I didn't find anything like this.