Nikorr 18-200mm VR focus problem

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gretch

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Andrew
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Does anyone else have this problem?

When the lens is zoomed in to beyond 100mm, the lens won't focus (the focus ring turns but doesn't turn the internal focus). If I zoom back to under 100mm, it's fine again.

I am using it with a D200.


Any ideas?
 
Do you have any other lenses you can try? Maybe borrow one from someone else? Try your lens on someone else's body?

I take it you are focusing on different things - sounds like a silly question, but when you zoom in on something there may not be enough contrast for the AF to be able to lock on.

If you focus manually, does the AF lock indicator light up in the viewfinder?
 
I've not had any problems with mine either. When you say the focus ring turns but the internal focus doesn't, are you trying to manual focus? If so, does autofocus work at all zooms, and is there a chance you're trying to manual while also autofocussing is on?
 
Usual tests - check all switches are properly where they should be. Check lens is clicked in properly on the camera. Clean the contacts between camera and lens. If still doesn't work, send to Nikon! (Or buy mine in the For Sale forum! :D)
 
Thanks for those

What I was trying to say is that when I rotate the focus ring at any zoom between 100mm and 200mm, the focus doesn't go beyond 3m (and if it's already at infinity then it doesn't move at all). The ring turns, but the internal focus doesn't change.

If I return to the zoom below 100mm then the focus happily changes from .45m to infinity and back.

Any ideas? Or is it a less than happy trip to Nikon for me?
 
gretch said:
Thanks for those

What I was trying to say is that when I rotate the focus ring at any zoom between 100mm and 200mm, the focus doesn't go beyond 3m (and if it's already at infinity then it doesn't move at all). The ring turns, but the internal focus doesn't change.

If I return to the zoom below 100mm then the focus happily changes from .45m to infinity and back.

Any ideas? Or is it a less than happy trip to Nikon for me?
Click to expand...

If it's not actually moving when turning the focus ring, then it sounds like a return to Nikon to me, sorry :thumbsdown:
 
I had a good look at mine today, and found that after 135mm(ish), the focus does get slower when in AF, not sure if this is related - seems like it may need a little more power when the lens is extended, so maybe the motor in your lens is getting worn?

You could always try the old trick of cleaning the contacts on the lens and body, and also ensure that you are using a fresh battery.
 
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