Nikon af-s 18-70 dx autofocus problem

This lens lacks the autofocus motor, so it will only autofocus on cameras with the motor. This lens will autofocus on every Nikon digital SLR except for the D40, D40x, D60, D3000, D3100, D5000, and D5100. It will autofocus with the D1 family, D2 family, D3 family, D50, D70, D70s, D80, D90, D100, D200, D300, D300s, and D700 (I hope I haven't left any out).

Nikon guarantees 5 year warranty to original purchaser. If your camera functions with another AF-S lens, then the problem lies with the 18-200mm lens. The AF motor unit needs replacement. Nikon should be able to repair the lens under warranty.
Make a copy of your receipt and go Nikon website to start repair service.

I'm assuming this lens worked on another Nikon camera before and that the lens mount is for Nikon cameras. Make sure the aperture ring is set to "A". Clean the contacts on the lens and camera body where they meet with a cotton swab lightly dampened with rubbing alcohol.

Hi,
Sorry to hear about your lens. If you are able to autofocus and take pictures with any other lens, then it means that your problem lies with the kit lens. If you can take picture in manual mode, but not in autofocus mode, then the AF motor in the lens in not functioning. I had the same thing happen to my 50mm 1.4 lens.
Depending on your location, there are Nikon repair centers in Melville, NY and Torrance, CA.
Hope this helps,
Andrew

This is normal. Bear in mind that the JPEG file has all the image processing done, while the RAW is just the raw data. Depending on your image settings (contrast, saturation, sharpening, etc) you may see some differences.

The D5000 needs an AF-S lens to autofocus.
Nikon have not fitted the mechanical focus drive to the D5000.

HI I AM SAGHA FROM MUMBAI I AM A REPAIRER AND I THINK UR PROBLEM IS NOT SOLVABLE BY YOURSELF YOU HAVE TO TAKE THE LENS TO EXPERT THERE YOU HAVE TO GET THE AF SENSOR CHANGED.THIS WILL SOLVE YOUR PROBLEM DON'T TRY ANY MORE ADJUSTMENTS WITH CAMERA IT MAY CONFUSE YOU MORE.

If lens has aperture ring, set to min aperture before mounting (f22 etc)
With heavier lenses it is not so easy to tell when lens clicks in all the way to mount, Lens wont autofocus if not clicked in to mount just so. Also both camera and lens should be set to AF.

Autofocus function on the D40 only supports lenses with the
AF-S feature, which have an autofocus motor built into the lens,
instead of using an autofocus motor drive built into the camera.

The Tamron lens you have, does not have a built in motor and
the autofocus function relies on the motor drive in the camera.

It will not work with the D40 or D60, but it will work with other
Nikon digital SLRs, such as the D80. Need to get an AF-S
type lens or upgrade to different Nikon digital SLR. Unless
you do this, you will have to manually focus the Tamron lens.

All of the Nikon DX (for digital) series lenses are also AF-S
type, so they will work with the D40, which is designed as
an entry level digital SLR, therefore it is intended primarily
for use with DX lenses, which are typically sold in a kit with
the D40. Most common one is Nikkor 18-55mm DX AF-S.

Other Nikon AF-S lenses made for film cameras (FX type)
will also work with the D40, but these tend to be expensive
professional models. DX series lenses tend to be more
affordable. You might consider the 18-200mm DX AF-S
as an alternative to the Tamron, but these are not cheap.

Do you mean that you turned off auto focus on the shutter button? The manual will tell you where to find the appropriate custom setting. It's Menu > custom setting menu > a Autofocus > a6 AF activation.

Hope this helps.