so im just getting into photography and filming, and bought a t2i with a 18-55 lens. one of the things i saw around a lot when i was looking for a lens was these wide angle attachments, such as this
http://www.amazon.com/Digital-King-0-45x-Angle-55-250mm/dp/B004QKWI0A/ref=sr_1_14?s=photo&ie=UTF8&qid=1347992396&sr=1-14&keywords=canon+wide+angle
has anybody had any experiences with something like this? i know it will take away slightly from the picture quality, unfortunately i am low on cash right now and cant afford a decent wide angle lens. so this looks like a decent option for filming until i have more money. anybody have any opinions or reviews on these?