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Repair diaphram on Nikon 18 to 200 G ED lens

When looking through the lens there is a black sort of blob inside the lens which confuses the autofocus. I have received approximate quotes of $500 and would rather have a go myself as I can get a new one for not a lot more so I need a manual or instructions on dismantling the lens from the rear

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  • Cameras Master
  • 102,366 Answers

Before you start disassembling the lens, do you have a lens collimator and other equipment necessary to realign the lens when you reassemble it? If not, you may as well disassemble the lens with a sledgehammer; it will work just about the same afterward.

Posted on Jul 13, 2013

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Posted on Jan 02, 2017

cammedic
  • 667 Answers

SOURCE: Parts and service manual of Nikon ED AFNikkor 80-200mm 1:2.8 D zoom lens

Nikon Parts
841 Apollo Street, Suite 100, El Segundo CA 90245
(310) 414-8107, (310) 322-6979

Posted on Jan 19, 2008

  • 13 Answers

SOURCE: Can't autofocus Nikon 50mm f1.8 lens

The lens has an autofocus motor, but because it is an older model, it will not autofocus for the D40(x), D60, or D5000, which have more stripped down components. I advise you exchange the lens for the newer model, or return the D5000 and get the D90 for just a bit more.

Posted on Jun 12, 2009

  • 146 Answers

SOURCE: Nikon 18-55 zoom lens doesn't autofocus

You might like to check if the A/M slider switch on the lens by the Nikon label is set to A.
It sometimes gets moved accidently.
Set to M the lens will not autofocus.

Posted on Jul 04, 2009

  • 291 Answers

SOURCE: Nikon 18-70mm f/3.5-4.5G AF-S DX Zoom Nikkor repair manual

The only problem with doing this repair yourself, is that upon re-assembly you will need the Nikon software and hardware to readjust and calibrate the lens. Try sending it to PhotoTech Repair Service in NYC. They are Nikon authorized, and can do the repair under warranty if you still have it. Also if you join they're facebook page, they will give you a 10% discount.
Here is the facebook page link, it has everything you need to send it in.
http://www.facebook.com/pages/New-York-NY/PhotoTech-Repair-Service-Inc/102527215194

Posted on Apr 06, 2010

  • 102366 Answers

SOURCE: I have a Nikon d3000

The Nikon D3000 does not have a focusing motor built-in, relying on the lens to have a motor. The Tamron AF 55-200mm does not have the necessary motor; it only auto-focuses with Nikon cameras that have the motor in the camera body.

For Nikon lenses, you need lenses designated AF-S. For Tamron, you need lenses designated USD and/or BIM.

That probably wasn't the answer you wanted to see, but there it is.

Posted on Aug 09, 2010

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1 Answer

Autofocus on Nikkor 18-55mm lens doesn't work


probably you have problem with the focus motor, i ever have same problem and need to replaced the focus motor.

Jun 08, 2013 | Nikon Nikkor 18-55mm f/3.5-5.6G ED AF-S DX...

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I have a Nikon D3100 and want to buy a zoom lens 70-300.Please help I am confused is a Nikon AF Zoom-Nikkor 70-300mm f/4-5.6G compatible? And is it automatic focus?


That lens will work with the D3100, except for the autofocusing. In order to autofocus with the D3100, you need AF-S lenses, such as the AF-S VR Zoom-NIKKOR 70-300mm f/4.5-5.6G IF-ED or the
AF-S DX NIKKOR 55-300mm f/4.5-5.6G ED VR.

May 22, 2011 | Nikon Cameras

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Using a Nikon D40 digital slr with a AF-S DX Nikkor 18-200 1:3.5-5.6 G ED lens I was previously able to autofocus bun now am not. Can you suggest reasons why this may be?


Please check if the Autofocus-switch on your lens is set to M/A. Also check if the Autofocus on your camera is switched on. For detailed information about your cameras autofocus, please check this site: http://www.kenrockwell.com/nikon/d40/af-settings.htm

Jul 18, 2010 | Nikon D40x Digital Camera

1 Answer

Lens has lost ability to autofocus.


Nikon guarantees 5 year warranty to original purchaser. If your camera functions with another AF-S lens, then the problem lies with the 18-200mm lens. The AF motor unit needs replacement. Nikon should be able to repair the lens under warranty.
Make a copy of your receipt and go Nikon website to start repair service.

May 08, 2010 | Nikon 18-200mm f/3.5-5.6 G ED-IF AF-S VR...

1 Answer

Nikon D50 with Nikon DX 18-55 lens will not focus


Hi,
Sorry to hear about your lens. If you are able to autofocus and take pictures with any other lens, then it means that your problem lies with the kit lens. If you can take picture in manual mode, but not in autofocus mode, then the AF motor in the lens in not functioning. I had the same thing happen to my 50mm 1.4 lens.

Depending on your location, there are Nikon repair centers in Melville, NY and Torrance, CA.
Hope this helps,
Andrew

Apr 16, 2010 | Nikon Nikkor 18-55mm f/3.5-5.6G ED AF-S DX...

1 Answer

Lens works fine in manual focus on Nikon D5000 but won't autofocus.


The D5000 needs an AF-S lens to autofocus.
Nikon have not fitted the mechanical focus drive to the D5000.

Jun 22, 2009 | Nikon 10.5mm f/2.8G ED-IF AF DX Lens

1 Answer

Nikon 18-55 zoom lens doesn't autofocus


You might like to check if the A/M slider switch on the lens by the Nikon label is set to A.
It sometimes gets moved accidently.
Set to M the lens will not autofocus.

May 24, 2009 | Nikon Normal AF Nikkor 50mm f/1.8D...

1 Answer

Problems with Nikon Telephoto AF-S Nikkor 600mm f/4D ED-IF I Autofocus Lens - Black?


It sounds like the circuit board in the lens is intermittant or there is a bad connector contact internaly where the circuit board connects to the harnesses.

Trying to find a cold solder connection on a multi-layer circuit board with SMD technology componts is not usually very feasible and reliable.

A major cause of this type of failure is from humidity, and or banging or dropping the lens unit.

I would start by changing the circuit board and the connector assembly inside the lens. This is an expensive fix, but it is effective.

If you request the described repair and offer to pay the cost, I am sure they will do it.


Jerry G.

Apr 29, 2008 | Nikon Telephoto AF-S Nikkor 600mm f/4D...

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