http://www.nikonchat.com/200-mm-f-4-nikkor/

What are good lenses on a budget?
I use a Nikon D5000 and wish to explore the options of the lens. Currently I have the kit that comes with it (18-55mm f/3.5-5.6 G Nikon AF-S DX VR Nikkor and Nikon 55-200mm f/4-5.6G ED AF-S DX Nikkor lens), but I'm on a tight budget. I am looking for decent lenses are preferably under $ 300 each? Suggestions for a fish eye, wide angle around 10 mm and 18-200 mm a good quality?
I do not think you will be able to find a good fisheye for under $ 300. I am a shotgun, but check out counterparts for the nikon 50mm f / 1.8. Also, I'm picking up a 75-300 f / 5.6 for about $ 299, because its AF motor is not updated (it seems kind of noisy and slow, but I do not care).
55-300mm, 28-300 mm, 24-120 mm et 85 mm chez Nikon