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Auto focus has stopped working on my d40x camera the lense is nikon 18/55af is it the or is it the lense

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Check the A/M switch on the lens is on "A". And also, in the settings of the camera, make sure the focus mode is set to AF-A , AF-S, or AF-C.

Posted on Nov 30, 2008

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I have been given a 100-300mmF4.5-6.7DL Sigma lens but it will only work in manual focas AF but does work on a friends Nikon is that because my D40X has no AF motor.


That is exactly why the auto-focus (AF) does not work with that lens on this camera. The D40, D40X, D60, D3000, D3100 and D5000 lack an AF motor built into the camera. These cameras will require that the lens have the AF motor to work as expected.

You can review a complete list of lenses (as of 8/2010) that have a built in AF motor here.

Please rate this reply - thanks!

Dec 03, 2010 | Nikon D40x Digital Camera

1 Answer

My 18-55 and 55-200 lenses on my D40X will only work in the manual focus mode. (In other words, the autofocus mode has stopped working.) The problem first developed with the 55-200 lens and later with the...


I would check to see if the lenses work on another Nikon digital camera.Double check the A/M mode switch on both. Does it feels solid or mushy when you flip it back and forth?

I will say that both lenses use the same auto-focus gear assembly which can fail over time. Nikon only sells the assembly as a unit, so even if one of the small gears is broken or damaged, the whole thing gets replaced. You cab send them to Nikon or a trip your local camera store may be in order.

Jan 06, 2010 | Nikon D40 Digital Camera with G-II 18-55mm...

2 Answers

Nikon Cameras specification.


Some charts are on the web. Search for your model of camera and compatible lenses.

Sep 25, 2009 | Nikon D80 Digital Camera with 18-135mm...

1 Answer

Automatic focus not working


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.
Most 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.
Autofocus 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.

Jul 14, 2009 | Nikon D40x Digital Camera

1 Answer

A/F PROBLEM


The D40 (& D40X & D60) will not autofocus with the G series lenses. The three cameras above require a newer DX series of lenses for the AF to work.

Jan 04, 2009 | Nikon D40 Digital Camera with G-II 18-55mm...

1 Answer

Nikkor lense


You need AF-S or AF-I Lenses. These have the autofocus motor built in to the lense. The D40 and D40x does not have an autofocus motor in the camera body itself, while the D80, D300, D3 Etc to have the motor in the camera. You can use most old lenses on your D40x, but you will have to focus them manually.

See Ken Rockwells page for a lot of D40 / D40x info
http://www.kenrockwell.com/nikon/d40.htm

Jun 03, 2008 | Nikon D40x Digital Camera

1 Answer

Camara problem


Auto focus is supported with AF-S and AF-1 lenses only.
A mode switch is on the lens ,it should be in A position to activate auto focus.
In the menu select auto focus

Mar 24, 2008 | Nikon D40x Digital Camera

3 Answers

Nikon D40X stopped auto-focusing yesterday


I had the same problem. My issue was with all my lenses. I solved it by going to the menu and selecting the custom setting menu (pencil icon). Then from the right menu select the AE-L/AF-L and press OK. Then make sure it is set on AE/AF Lock. Presto...all my lenses worked on auto-focus.

Feb 24, 2008 | Nikon D40x Digital Camera

1 Answer

Sad photographer


Sounds like you need to get your camera fixed by Nikon.

However, you say the auto focus stopped working, you didn't switch to a lens that uses a mechanical focus linkage do you? The D40 only supports lenses with AF-S or AF-I type autofocus drives. AF-D and AF-G types without AF-S or AF-I don't autofocus.

Also, check that the A/M switch on the lens is in the correct position.

Manual focusing is quite difficult to do accurately with an AF camera. The screen inside the camera is not optimized for this. If you are sure you are focusing accurately but the pictures you take are still out of focus, the mirror may need adjusting. I can provide further info on this if you require, but if you're within warranty, i'd recommend that route first.

Nov 19, 2007 | Nikon D40x Digital Camera

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