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I have Nikkor 105mm Micro lens. It was used extensively in the desert. It seems minute sand particles have been deposited inside the focussing barrel. Manually it can be focussed. But on auto focus mode it is not working. Can I rpair it myself. I am in Saudi Arabia I don't find any repairer here. Even Nikon dealer is not helping me.

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Hi,

If the minute sand particles is in between the focus ring and lens barrel, you need to get it repaired. If it is superficial and only in the seam of the focus ring, you could try to cleaning with paint brush and some iso-propyl alcohol or methanol.

Note - DIY is never recommended in these problems as more often i have seen people damaging the camera's more often than repairing it.

Good Luck!!

Thanks!!

Posted on Aug 03, 2010

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