I have heard of this and googled it but I couldn't find how to do this. Can someone explain to me exactly what it is, can I do it with my S5000 and how I can do it.
And if your S5000 has threads for filter attachment, yes you can do it easily. Without filter threads will require some inventiveness and lots of tape.
For the heck of it, I tried doing this with two zoom lenses (I don't yet have a regular non-zoom lens). Doesn't work. All I see is a tiny opening. Oh well.