Wide angle lens vs Fisheye lens adaptor

[tmfwy]

Hi!

I've just started to venture into Digital Photography, and am wondering at what's so different between a wide angle lens, versus the use of a Fisheye lens adaptor?

Wouldn't it be more economical to purchase the fisheye adaptor, since you will be able to make use of your existing lens?

What will the difference in quality be?

Thanks

 

[tunster]

Fisheye normally produce a circular result. Something like this
http://photonotes.org/reviews/fisheye-adapter/