This macro lens is perfect when you are travelling and cannot pack a proper macro lens, or you need magnification in our photos.
Just get either a circular magnifying glass, or you can just rip off the handle of a normal glass. Then you make it fit on your lens hood, and you are good to go! The more zoom you have on your lens (like a telephoto lens), the more magnification you will get!
Let me know if you have questions :)