Having problems with your Nikon D40x Digital Camera ?

Automatic focus not working

\015 My new Nikon D40 has suddenly stopped taking photos on automatic focus. The shutter makes a faint clicking sound when it is depressed and the flash does not engage. When I switch to manual it seems to work all right, though I am not able to get the focus where I want it. I'm not sure if this is a case of my unfamiliarity with the camera or a related problem. Any help is appreciated.\015

Answers :

The D40x only autofocuses with the latest AF-S (and old professional AF-I) lenses. Most traditional (screw-type) AF lenses from 1986 through today will not autofocus on the D40x. If your lens says "AF-S," you're fine.
\015\012Most lenses sold today for the D40x are AF-S, and so is the included 18-55mm kit lens. Many non-Nikon lenses from Tamron, Tokina, Quantaray, Sigma and anyone other than Nikon still won't autofocus on the D40x. Try before you buy, but honestly, there isn't much the included 18-55mm lens won't do.
\015\012Autofocus systems are fast, but not usually instantaneous. You have to hold the shutter down halfway as you compose the first shot so the AF system can focus and lock, and then the camera fires instantaneously when you press the shutter the rest of the way. See Preventing Shutter Delay for more.
Repair Help & Product Troubleshooting for Nikon D40x Digital Camera

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