If you wanna go really cheap, I'd also suggest welders glass. While it might not look the prettiest when mounted to your camera, it can produce nice images, as long as you watch where the sun is to avoid flare. Here are a few shots I got with my set-up. And yes, I am aware of the poor composition of the portrait shot =p.
THIS IS A LOW QUALITY PREVIEW. Please log in to see the good quality stuff.
THIS IS A LOW QUALITY PREVIEW. Please log in to see the good quality stuff.





