I have a nikon d40 and i want to upgrade?

So i have a nikon d40 and i'm not really a beginner anymore i really want a legit camera. Should i get a whole new camera or should i just get new lenses and equiptment for my nikon. I shoot skateboarding so i might need a fisheye and i also need a camera with a faster shutter speed

Added (1). Jim A there's no need to be rude.

Fisheye lens can get pretty expensive. Why not ultra wide (that's not cheap either).

p.s. Isn't D40's fastest shutter speed fast enough to capture the skateboard action?

Apparently you don't know your D40 very well. First your camera will shoot at 1/1000 and up… Or didn't you know that because you haven't even read the book?

This camera will shoot rings around any point and shoot all day long. It will also keep pace with most any DSLR out there. The only real difference is, if you want to do prints the size of a small car I would recommend a larger sensor. Otherwise, I'd invest in lenses if I were you.

I would recommend upgrading to a rebel t2i. I'm not going to go into detail about it as you can click here and read all about it's amazing features and the reviews raving about it:

http://www.amazon.com/...B0035FZJHQ

If you just want to buy a lens for your d40, I would recommend these:

http://www.amazon.com/...B001K5UQX0

http://www.amazon.com/...B0018BZE38

Hope this helped.

A Nikon D300s with a AF Nikkor 10.5mm f/2.8 fisheye will work perfectly for your purpose.

The D40 is a legit camera. It can shoot at 1/4000 seconds shutter speed which is fast enough to freeze the rotor blades on a helicopter. You aren't going to find shutter speeds much faster. As a bonus, the D40 has one of the highest shutter sync speeds if you like to shoot with a flash.
Newer cameras, like the D90 and D7000 have:
- Less noise than the D40 at higher ISO settings (1600 and above). Handy if you shoot in low light.
- Settings which are easy to get at, whereas the D40 requires poking around a menu.
- Support CLS if you're into having your flash off-camera. D40 doesn't support CLS.
- Have a focus motor in the body. Gives you a much broader selection of lenses.
- Grips, which means more batteries, comfortable trigger when shooting portrait orientation, more comfy if you have big hands.

If you're not a beginner, than you should be able to take pretty fantastic images with your D40. Your skills of lighting, composition, and equipment make or break you images. Post production can also be important, but you shouldn't rely on post production unless you are after unreal effects.

Different lenses can do a lot. Lenses are always a good place to put money. Only you will be able to figure out what focal lengths best suit you. Best if you can borrow friends lenses or use another camera with different focal lengths that you are interested in.

D40 is a superb camera even today. I agree with JimA. You should invest in faster lenses if you want to but stick with D40.
If you need the improvements in image processing of the newer cameras, then simply start clicking raw and post-process all images.