Wrong lens size for slr?

I recently ordered a fish eye lens for my nikon d5000 and its the wrong size. Is there any kind of attachments i can add to it to make it fit?

If you ordered a true fisheye for your camera, it should look something like this.

http://www.amazon.com/...00317O0KA/

It replaces the lens on your camera (as any interchangeable lens does). If you inadvertantly purchased a fisheye lens for a different camera, you need to send it back

On the other hand. If you actually bought an add-on filter that promises a fisheye view, then you needed to buy one with the same filter thread size as your cameras lens, usually 52 mm on entry level Nikkor lenses.

As long as you understand that what you bought is NOT a true fisheye, in that it may not cover a full 180 degrees and what is does is grossly distort the image so it looks like a fisheye lens was used. In the future you need to be more careful when buying accessories for your lenses that mount on the filter threads. As you start to build your camera system, you will be buying more UV or NC filters to protect your lenses. Currently, my lenses use 52mm, 62 mm, 67 mm and 77 mm filters. I have a UV or NC filter for all my lenses plus a few and (10-stop) filters and a polarizing filter for one of them.

Here is what a true fisheye sees, 180 degrees or more and as you can see, the person standing next to the lens, my feet and a huge shadow are also included in the shot. This shot is to demonstrate some of the things you need to take into consideration when using a fisheye lens.

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Here is another shot that only includes what I wanted in the image.

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This shot includes my friend and colleague Max, his cameras and a large portion of the basketball court. This was shot just prior to a WNBA game