Cheapest fisheye lens for nikon D50?

I need a fisheye lens (NOT AN ADAPTER) that will meter correctly on my nikon D50. I'm trying to get this as cheaply as possible. I was looking at the rokinon 8mm, but it would appear to not meter correctly on my body.

Unfortunately, no new fisheye lens under around $700 that will meter and fit your camera. This is probably the cheapest fisheye lens that does meter and fit your camera: http://www.amazon.com/...000144I30/

If you can live without metering and autofocus, the rokinon 8mm is about the cheapest it gets.

Check out the Pro-Optic 8mm f3.5 from Adorama. $259.95 in a Nikon mount. Its a manual focus fisheye lens that should meet your needs.

http://www.adorama.com/...835NK.html Be sure to read the customer reviews.