I bought these type of lenses for my Fuji E550. They do help in some ways but are far from perfect. I wouldn't recommend them for anything other than a cheap boost to get better pics of far away objects on vacations. They work great in zoos, and some scenery shots. Unfortunately they are not all good as my first set had a bend in the lens and wrecked all the pics I took with it as they looked really odd when I saw them on a larger screen.
So end opinion, can be good for some shots but not usually worth the money.