Nikon 18-200mm f/3.5-5.6 G ED-IF AF-S VR DX Nikkor Lens Logo

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Question about Nikon 18-200mm f/3.5-5.6 G ED-IF AF-S VR DX Nikkor Lens

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Focus is not working well on distances far away -endless position

I have a Nikon D80 and Nikkor 18-200mm VR too. Worked fine for four months, but today it would not focus clear on far distances when focusing closer, at 135-200mm area. Neither with autofocus or manual. But closer subjects, from 2 meters up to 50 meters is fine and in full focus. It's the far distances, more than 100 meters and in the horizon that gets all blury. I have a feeling the motor isn't working properly. Tried another lens (70-200mm) to check that it's not the camera. It's clear with another lens, so it has to be the lens. It's a little looser than it has been before, gradually becoming more and more self sliding up to 200 mm when pointed downwards. So it needs to be tightened. But I don't think it has anything to do with the problem, as it has been sliding for a while, and the focus problem occurded for me today.
Per Ivar Norway

Posted by Anonymous on

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Sounds to me like a hardware problem. Pls send ur lens to Nikon to have it looked into

Posted on Jan 04, 2010

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At 300mm focal length at a distance of 200 yards away what F stop will give me edge to edge sharpness in my photos?

The edge-to-edge sharpness of your lens is a function of the optical design much more than f-stop. What I would be more concerned with is depth of field. The important consideration is what the closest and farthest point you want to be in focus. Here are some figures that might help. For a 300mm lens focused at 200 yards (600 feet), mathematical calculations yield the following (0.03 mm circle of confusion in all cases):

Near limit = 256' 3", far limit = infinity, total depth = infinity, hyperfocal distance = 447' 5"
Near limit = 303' 9", far limit = 24,350' 8", total depth = 24,046' 11", hyperfocal distance = 615' 2"
Near limit = 359' 2", far limit = 1,821' 3", total depth = 1,462' 1", hyperfocal distance = 894' 9"
Near limit = 403' 4", far limit = 1,172' 2", total depth = 767' 10", hyperfocal distance = 1,230' 4"
Near limit = 447' 4", far limit = 910' 12", total depth = 463' 8", hyperfocal distance = 1,757' 7"

Hi experts. my D80 with AF-S Nikkor VR lens refuses to AUTOFOCUS. When half pressed, the focus just shifts wide / close unable to latch onto anything - and I cannot complete the shot. Manual mode seems to...

Hi, first try cleaning the contact lens and body (off Camera & Without bat.) isopropyl alcohol.
Do you hear any noise in the lens when you focus on auto?
If your answer is yes, maybe the SWM has been stuck and not turning.
If you have the tools and you can carefully try to disarm it by removing the screws holding the lens connector 2 screws, then holding the back cover ring 3 screws and it comes out, you let the sw AM VR on / off, and eventually take away the bayonet unscrewing the screws that hold it.
Remove the cover and can you see

There may be some connection misaligned flexible connectors.
SWM bad.
Electrical bad component.

I hope will be usefull.
Best reggards

Autofocus stopped working

I fix these all the time for this problem, The focus motor is bad, Tony

Slow focusing on nikkor 70-300mm 4.5-5.6G VR ED lens

Your motor may have gone bad. 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.

Nikkor af-s 18-200 VR not focusing

Please check your focus settings in the camera menu. Play around with the focus point from Single to 11 points. Also, try Auto mode as a quick way to test if the focus is working

Auto focus at full zoom not responding Nikon D80 with 18-200mm VR

Hi - I own this lens and it manually focuses at all focal lengths (hard to see at 18mm unless your subject is extremly close). You may need to get the lens checked. BTW - Mine was set as follows when I checked for you:
  • D80 was "on"
  • M/A
  • VR = Off
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Hope this helps!

Nikon D80 Autofocus problem

sir, replace ur lens image reading sensor
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