Today, Matt Hallock shows us how to build a fisheye lens for under $10 using parts you find at a local home improvement store. The cost of a fisheye lens is usually cost prohibitive, but he's found a way to get most of the effect for a minimum investment.
The high price of a fisheye lens often discourages a lot of potential buyers. A quick glance online will show that even cheap Russian lenses with conversion mounts are $300 or more. For amateurs, the fisheye lens is usually nothing more than an interesting gimmick; if that's the case, the price seems difficult to justify.
In lieu of a fisheye that clears out the bank account, bide your time with one you can build with just $10 and a thirty minute trip to the local hardware store. All you'll essentially need is a combination of PVC pipe, electrical tape, and a door viewer or peephole for this task.
Check it out at Icrontic. The results aren't really that impressive though, but hey, what do you expect to get for $10?