Can I use my Nikon D40 Lenses on a Nikon D90?

I have a Nikon D40 DSLR Camera with 18-55mm lenses; I'm buying either a Nikon D90 or D7000 body. Can I use my lenses?

Yes, all Nikon DSLR lenses can be used interchangeably between Nikons.

Most likely. Nikon has not changed lens mounts since 1935, except for the auto focus coupling on the first few SLR's in the 1980's.Bring the body into the store to be sure and see if the sales person will fit it on your camera.

All your lenses will work 100% with the D90 and D7000

In the DSLR category, there are no lenses that are dedicated to a certain camera. So there are no D40 lenses, or D90 lenses. There are camera bodies and lenses, and the same 18-55 lens is used on virtually all of Nikon's entry level cameras.

Therefore you will find the same 18-55mm lens used on your D40 on a D40x, D60, D3000, D3100, D5000, and D5100.

While the D90 and D7000 "kits" (camera plus lens from the factory) includes an upgraded 18-105mm lens, there's no reason you can't buy a D90or D7000 body and use the 18-55mm lens on both your D40 and the D90.

The only issue with Nikon lenses is that some of them may not autofocus on the D40, but will autofocus on the D90 or D7000.

This is because the D90 and D7000 are advanced amateur cameras and have more capability then the entry level cameras. They include an internal focus motor that the D40 and other entry level cameras lack.

Some lenses (AF) require the camera's autofocus motor, while other lenses (AF-S) have their own built-in motors so they don't need the camera's motor.

So some lenses that autofocus on a D90 or D7000 may not autofocus on a D40, but any lens that will autofocus on a D40 will autofocus on a D90 or D7000.

But other than the autofocus issue, any Nikon F-Mount lens will work on any Nikon DSLR.

Hope this makes sense.