Nikon 300mm f4 Not Auto Focusing at Infinity

Started Feb 26, 2014 | Discussions thread
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Clark95 Regular Member • Posts: 465
Nikon 300mm f4 Not Auto Focusing at Infinity

The other day I notice my 300mm f4 AF-S is not locking focus at infinity.  It focuses fine at all other distances.  I checked to see if it was the camera but no other lens is doing this.  I tried cleaning the contacts, but it's still an issue- although I may try cleaning again- I am not sure how well I really cleaned them.  Does this sound like a contact issue, or possibly a motor issue?  I am hoping it's contacts, and that I can fix this myself.  I really don't feel like sending it in for a repair.

Thanks for any tips.

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