Question about Nikon D40x Digital Camera

4 Answers

'lens not attached'

Even when the lens is properly attached, it says 'lens not attached'. I've checked the contacts and attachment, and it intermittently works. How do I fix this please?

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  • jbird31 Nov 17, 2007

    I am having the same issue. The camera is not recognizing the lense?

  • Anonymous Nov 22, 2007

    I too have the same issue - worked fine for 2 days. Lens is properly attached and is set for auto. - won't work on manual either.

  • Anonymous Nov 28, 2007

    so how do you fix it? do I need to take it to a dealer to get the contacts cleaned?

  • nomadwnd Dec 04, 2007

    I have a D200 and a D40. I have 2 18-135 nikkor lens'. Both lens' intermittently show "lens not attached" on both bodies. All other lens' I have work fine on both bodies. I've have cleaned the contacts to no avail.

  • nomadwnd Dec 04, 2007

    I sent one lens in to the factory for another problem. I had a side note about the lack of the bodies recognizing the lens and the factory ignored it. I still have not found a solution. Whenever I turn on the camera and it happens, I just move the lens a little and most often it will work. This would normally lead me to believe that it is, indeed, a contact problem except for the fact that I have cleaned them a number of times, both lens' act the same way and all the other lens' I have work fine on both bodies.

  • trebor3 Dec 10, 2007

    Our camera started intermittently displaying the "lens not attached" message. If you twist the lens partially off and then back, it sometimes, temporarily fixes the problem. We took it back to the camera store and they said they had not had any other complaints, but if it continued it would need to be returned to Nikon for repair.

  • CarlosNK Mar 09, 2008

    D40 started showing the message "lens not attached". First time removing and replacing the lens fixed the problem. After that the camera refuses to focus (it works OK with manual focusing)

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We had the same problem. After inspecting the contacts I saw that the one metal ball (contact) that was separate from the other contact grouped on the mounting collar was stuck down. By pressing the contact a couple of times with a blunt object it freed up the contact so that when re-attached the lens it worked as expected.

Posted on Feb 27, 2010

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If you switch to manual operation and the error message is no longer showing and you are able to take a shot ,it would appear a contact problem on the lens or camera body.
Those little gold plated pins must be spotless.

Posted on Nov 20, 2007

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I have a nikon d 40 and i bought a opteka 650 -1300 mm lens everytime i mount it to the camera it says lens not attach tried everything still nothin can anybody help

Posted on Feb 10, 2010

  • chron Feb 23, 2011

    If you have a manual lens, the camera mode dial (SPAM) must be set to 'M' for manual.

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The contacts can be cleaned if you "VERY CAREFULLY" use a clean eraser on both the camera and the lens.  Be extremely careful that you do this with the camera facing downwards, as you don't want eraser bits to find their way into your camera.  Also clean the contacts on the lens.   When you change lenses, always point the camera in a downward position, as this keeps dust and other stray particles from entering your camera and sticking to the high pass filter.    If this doesn't work, I would take it to a Nikon approved repair facility.
Good luck.

Posted on Dec 06, 2007

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