Other than the technique that Andy mentioned, another exercise is to sit down, anywhere, and unfocus your eyes. With them unfocused, see what you can find in your field of vision without looking at any one thing. <br><br>One good way of practicing this is to pick (once you are unfocused and spacy looking) a building 50 yards or so away, and write down all the things you see without focusing on it, then compair what you saw to what you see when you are focusing.<br><br>I know, that is a sucky way to describe it. Sorry- I'm trying to explain how to breath, so it isn't easy.

But it can be done (IIRC, Tom Brown talks about this in one of his books, and might do a better job of explaining it), and it makes the transition easier, IMO. It's also good if you have kids or spend a lot of time working with kids, becuase you sometimes get to the point that you can focus (like for reading) and still see things in your perifferal vision clearly. Adds to the whole air of omninicience.