Question about Nikon D40x Digital Camera

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Nikon D40 will not take pictures when in autofocus mode

I have a Nikon D40 that is less than 6 mos old. It will not let me take pictures when it is in the autofocus mode. When I try to take a picture, it will not stop trying to focus. There have been a couple of times that it has taken a picture when the lens is fullly extended, but not always. There is plenty of light, and it takes pictures fine in manual mode. I have changed the battery, taken the lens off, and put it back on, taken the memory card out and put it back in. I've completely reset it, and it still will not work. I just got it to work, but I have to push the AE-L AF-L button while I am taking the picture. Can you give me some advice on what to try, or what could possibly be wrong? Thank you.

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Re: Nikon D40 will not take pictures when in autofocus...

I had a similar problem recently with my D-40 and the 18-135 Nikkor zoom lens. When I put the kit lens back on, it worked fine so it turned out to be a problem with the lens. I took it back to the store and since it is less than a year old they are sending it back to Nikon to be repaired. 

Posted on Nov 18, 2007

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Re: Nikon D40 will not take pictures when in autofocus...

Check for dust specks on the lens glass.

Posted on Oct 11, 2007

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Having gone over a month without a response, I assume this is no longer an issue.

Apr 13, 2010 | Nikon D40 Digital Camera with G-II 18-55mm...

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Nikon D40 will not autofucus.

Check if the swithch on to your left on the lens set to 'A'. If it is set to M this will be in manual mode and autofocus does not take place.
If this doesn't help, try removing the lens and re-fixing it firmly and properly.
Trust this helps.

Dec 16, 2009 | Nikon D40x Digital Camera

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The Autofocus does not work on my Nikon D40

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Jul 18, 2009 | Digital Cameras

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Won't take pictures when set to A on the lense.

if you're using D40/X, make sure that the attached lens has built-in autofocus motor (e.g. code AF-S for Nikon, HSM for Sigma), because the camera does not have built-in autofocus motor in the body so only manual mode will work in most AF lenses..

if you're lens is already one with built-in autofocus motor, you might need to check the motor at a service center

Apr 16, 2009 | Nikon D40x Digital Camera

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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

Jun 03, 2008 | Nikon D40x Digital Camera

2 Answers

Autofocus will not work,

Camera wont let you take a picture until focus is locked, why are you using M (manual focus) if you expect autofocus to do it for you? In M mode it is up to you to focus correctly or camera will not take the picture.

Apr 13, 2008 | Nikon D40 Digital Camera with G-II 18-55mm...

2 Answers

Nikon d40 digital camera

When the camera is in auto focus mode, it will not take the picture until it locks onto a subject. If there is not enough light, the camera will "hunt" for something to focus on. Since it can't define any edges, it won't allow the shutter to release.

The D40 base model does NOT have a powered focus lever for autofocus, so if the autofocus is not working, suspect the lens.

Mar 23, 2008 | Nikon D40 Digital Camera with G-II 18-55mm...

2 Answers

No pictures when in autofocus mode

I was having the same problem with my D40... but I read your post, tried switching the 18-55 lens to manual, then back to auto, and it seems to be working fine now. Hmmmm... think maybe there's a circuitry issue with the lens?

Nov 11, 2007 | Nikon D40x Digital Camera

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