Summary: Previously I purchased a cheap generic telephoto lens for my dsc-w5. What a waste of money.. So, after purchasing this lens I was very satisfied. It is a high quality lens. Comparing the photos with the cheap lens and then this lens told me it well worth the money to purchase the Sony lens..
Summary: As far as lenses for an inexpensive digital point and shoot, this one does the trick. It's certainly not a phenomenal lens by any means, but it does provide a slightly better range than the camera itself.
Summary: This lens is perfect.....yes, some people complained in reviews about the fish eye effect but when you zoom out, your image is much closer and the picture is as clear and sharp as if the extra lens wasn't on it. The adaptor is a smooth attachment to both it and the camera.
Summary: I bought this lens and the wide angle lens for my Sony W50 before leaving for Switzerland. Yes, the lens does require you zoom in to 2x or greater, but isn't that why you bought it? The image quality is excellent. It really brought the mountains (you should see the pics I took of The Matterhorn!