How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Rick Your Own Question
Rick
Rick, Camera and Video Technician
Category: Camera and Video
Satisfied Customers: 1704
Experience:  25+ years experience as a camera and video technician.
47133069
Type Your Camera and Video Question Here...
Rick is online now

Dear Sir, I have an AF-S Nikon 18-200mm 3.5-5.6

Customer Question

Dear Sir,
I have an AF-S Nikon 18-200mm 3.5-5.6 G ED SWM VR lens that I use a my regular lens on my D300. Quite suddenly is started to fail to auto-focus on distant objects, although working normally at closer distances. Also, I am unable to manual focus. The lens appears to need to turn a bit further to achieve infinity focus. Other lenses that I have appear to be working normally. I have tried swapping lenses/cameras with a friend who has a D800 and he confirms the same symptoms. His FX lens worked fine on my camera
I will be pleased to hear your view on this.
Many thanks,
Roger Swinfen.
Submitted: 2 years ago.
Category: Camera and Video
Expert:  Rick replied 2 years ago.

Hi. My name is*****’m a camera repair technician with over 20 years in the business and I'll be glad to help you with your question today.

If the lens fails to achieve infinity focus, the front element may have come loose. Check to see that it is screwed down tight. You may need to remove the decoritave decal ring around the edge of the front element to access the spanner slots used to tighten the element in place.

Rick and other Camera and Video Specialists are ready to help you
Customer: replied 2 years ago.

Hi Rick,

Many thanks for your reply. I admit to being a bit "miffed" because I thought that I was logged onto the official Nikon UK website as Googled. I am now aware of "Just Answer" and wiser about the internet. I am the wrong generation!. BUT, I bow to your experience and feel a bit of a plonker. A the moment I think that you are exactly right. The front element was slightly loose and the "in focus" indicator in the viewfinder is working again. I will check it all over again this evening to make sure that I have kept it clean but I think you have sorted it for me.

The score board has disappeared but I have no alternative to awarding you< "Excellent Service". Perhaps it would have cost me more than £22 if I had connected with Nikon.

Yours,

Roger.

Expert:  Rick replied 2 years ago.
I appreciate your acceptance and would like to assure you that any information you recieve on the Just answer website will probably be more better than what you might get from Nikon itself due to recent restructuring and new "Call Room" policies. They really aren't that helpful.

Related Camera and Video Questions