Lens doesnt focus on my new D3100!

[Iris.HangDiep]

Hi. I just bought a new Nikon D3100 2 days ago and suddenly the lens 18-55mm doesnt focus anymore. When I try to press half the shutter it wont focus but making an anoying sound instead of the nice sound of focusing. Im still new to photography so I dont know what to do. Any help is truly appropriated

[zona5101]

humm - no idea
but
- confirm your batteries are fully charged
- remove then remount the lens, attempt a shot
- put the lens in manual focus and turn the focus ring checking for abnormal resistance

[jml79]

The good news is that you likely still have warranty and the focus motor is in the lens not the camera body. You may have a bad lens. There is a tiny motor in (around) the lens that drives the auto focus. It is possible that it is defective. Take it back to the store and ask to try another lens or the one they have on the display model. If that lens works on your camera body and yours still doesn't, return the camera and get a new one.

[autofocus]

Originally Posted by Iris.HangDiep

Hi. I just bought a new Nikon D3100 2 days ago and suddenly the lens 18-55mm doesnt focus anymore. When I try to press half the shutter it wont focus but making an anoying sound instead of the nice sound of focusing. Im still new to photography so I dont know what to do. Any help is truly appropriated

Does it do it (not work) all the time regardless of light conditions, or only in dim light?

[Iris.HangDiep]

Yeah the battery is fully charged. I did try to remove and put the lens back, took some pictures under light condition, but nothing happened. I think I will go to the store then. Thank You very much!

[Dennismc]

Have you checked the auto/manual switch on the lens itself? I know it sounds stupid, but I switched it once on my 18-55 without knowing it, took me a few hours to figure it out and drove me nuts...