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 Moderated by: chrisbet,  
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iPlaid



Joined: Wed May 23rd, 2012
Location: Illinois USA
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I just got this lens about a month ago and have shot probably 10k frames...mostly with focus tracking at equine events. Last night, while at an event, i noticed the focus locking up occasionally. I did all the normal checks (switches, contacts, etc) and all looked good. Then later, it just stopped focussing altogether. I tried it on another body, etc to no avail. Has my afs engine died already? It's going back and a new one is on the way, but this really worries me on a very expensive price of glass that is supposedly professional quality...was this a fluke?

Robert



Joined: Mon Apr 2nd, 2012
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Could be something as simple as a lose screw?

Most equipment fails early or dies of old age or of course accidental damage.

There was a huge hoo-ha a while back about the quality of internal machining finish in new 70-200 Nikkor lenses. The internet was rife with heated discussions on that occasion, I suspect if there was a real issue like widespread focus motor issues there would be an even greater outcry and we would all be very aware of the issue.

My guess is it's an individual fault. That isn't to say it isn't a batch issue, the next one may have the same fault?

Where have you sent it back to, the seller or Nikon?

iPlaid



Joined: Wed May 23rd, 2012
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Yeah, i couldn't find any issues with a quick internet search...it's going back to Amazon...and they've already got another on the way to me.

Robert



Joined: Mon Apr 2nd, 2012
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Fingers crossed it should be OK.

Give it some hard usage for the first month or so to shake any gremlins out.

jk



Joined: Mon Apr 2nd, 2012
Location: Carthew, Cornwall, United Kingdom
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Well if you buy from Amazon it is probably best to return it and get another.
I dont know how many images I have shot with my 70-200 or 24-70 or 17-35 but I have shot an awful lot!

Robert



Joined: Mon Apr 2nd, 2012
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Take a look in LightRoom... It should tell you.


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