Question about Sigma 17-35mm f/2.8-4.0 EX Aspherical for Nikon AF-D

3 Answers

Dust there is dust behind the front lens of my sigma 17-35 2.8-4.0.. do i have to disassemble the whole lens to get it out?

Posted by on


3 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.

    New Friend:

    An expert that has 1 follower.

  • Expert
  • 117 Answers

If this is not the DG type what you do is to remove the name ring you can pleel it of it will restick
under the name ring you willsee two holes to use a compus to undscrew this ring do not put
to much presher on the ring when unsewing it next you will be able to unscrew the front element
just clean and blow out the dust out then rescrew all .

Posted on May 13, 2009

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Contributor
  • 1,199 Answers

To do a good job yes! You can try blowing out with a can of high pressure air but it will not get it all! Take apart and only use a micro fiber cloth to clean and handle lens!
PLEASE rate my response to your question

Posted on Jan 10, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

If a DG macro you need to unscrew the front ringed cover to reveal screws (this piece shares the same thread that you would use for a filter, I am not refering to the outer rim! - I am not sure the official way of doing this as there are no location holes, I think they might use a mating tool which has enough friction and grip to get it turning in Sigma service centers but don't know for sure! However, a few specs of dust might annoy but are not enough to affect picture quality so probably as well to leave it alone :)

Posted on Sep 24, 2012

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a 170-500 Sigma zoom lens and I need a scheme to understand how to mount it. It was disassembled by an unqualified technician and now he failed to mount it. Thanks.

Take it to a Qualified technician and get it fixed properly.
I have this same lens for my Pentax K3, its a very good lens and worth getting it fixed by a proper tech who knows what they are doing.

May 01, 2017 | Sigma Cameras

1 Answer

Where can I find out how to take apart a Sigma 150-600mm contemporary lens?

Taking it apart is not the problem - re-assembling it will be. Unless you have access to an optical laboratory, where laser instruments can measure the exact tolerances required, don't even think about it. You will be left with a pile of optical components, and a far higher repair bill than if you had just let the experts sort out the problem in the first place.

Dec 03, 2016 | Sigma Cameras

1 Answer

How to disassemble Sigma 8mm F3.5 EX DG Circular Fisheye

If you want to disassemble a lens, it does not matter how you do it. There is no chance you will be able to reassemble it, so it still works as a lens. You need skills, collimator and instructions how to reassemble and align the separate elements. By asking this question, I think you at least miss a collimator. Please you don't have to take my word for it, but without the tools, you never get the lens working without errors in the picture.
Leave it to a certified Sigma service centre, if you ever want to use the lens again.

Oct 04, 2014 | Cameras

2 Answers

How to clean sigma 500mm 4.5 fungus

Do you have a lens collimator and other gear needed to ensure proper alignment when reassembling the lens? If not, try this. Put the lens inside a window where it receives directly sunlight. Yes, you'll probably have to move the lens every few hours to it continues to receive direct sunlight. Do this for a day or two. If the fungus persists then take the lens to a reputable camera shop and have a properly trained and equipped professional clean the lens.

Jul 20, 2014 | Sigma Cameras

1 Answer

On 250mm onwards the auto and manual focus do not work correctly unless I support the front of the lens

That is some heavy glass.. it sounds like there is a problem with the drive mechanism in the lens when the lens is extended. The droop from the weight of the glass prevents the mechanism to function as designed.

Since this is a precision optic, I would send it to Sigma or other reputable shop for a repair estimate. Attempting to disassemble this or contaminating interior parts would worry me too much for me to try it. Unless you know what you're looking for - I'd arrange for service by calling (1-800-896-6858) or contacting Sigma Customer Support, package it up and send it out for repair. You might still be under warranty, too.

Good luck!

Mar 23, 2011 | Sigma APO 50-500mm F4-6.3 EX DG/HSM Lens

1 Answer

How to dismantle the lens front element. My reason is to clean the dust inside. Thanks.

I strongly recommend you do not try this unless you are trained in camera/lens repairs and have the correct tools and solutions. Too many things that can go wrong, not the least of which is introducing more dust into the lens than you manage to clean off. Also, most lenses have a lesser or greater amount of sealant which may potentially be ruined. Lens elements are carefully aligned, and any misalignment on re-assembly will negatively affect focus in any lens, more so in a zoom. If the dust is affecting your photos, I suggest you have a local Sigma authorized camera repair shop clean it. And, most will have a limited warranty of 30 or 90 days. I speak from experience ... ::--))

Oct 07, 2010 | Sigma 18200mm f3563 DC OS for Canon

1 Answer

Sigma 6oomm mirror front lens removal

there is a locking ring you have to remove and then the front optic may fall out if it sticks you may need to heat up the barrel that might work

Jan 09, 2009 | Sigma Super Telephoto 600mm f/8.0 Mirror...

1 Answer

Dust inside my sigma lens

Zoom lenses are kind of like a tire pump. They will draw air in (and out) when zoomed. The longer the throw of the zoom, the more air moved. You can try Sigma, they may cover it, but...

A small amount of dust should have no effect on the quality of your images, but I would be concerned about it being transferred to your camera's image sensor over time. ( I assume you are using the lens on a digital body )

Oct 02, 2008 | Sigma 18-200mm f/3.5-6.3 for Nikon

2 Answers

Questions on disassembly for sigma 400mm apo af

Sigma will not repair this lens as the fungs may be in the lens on the barrels and if thay could clean
or replace optics the fungs may come back so thay cannot give a guarantee I know someone who
cleans lenses let me know if you want to contack him

Apr 08, 2008 | Sigma 400mm f/5.6 APO Macro for Nikon AI

Not finding what you are looking for?
Sigma 17-35mm f/2.8-4.0 EX Aspherical for Nikon AF-D Logo

439 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sigma Cameras Experts


Level 3 Expert

102366 Answers


Level 2 Expert

120 Answers


Level 3 Expert

3289 Answers

Are you a Sigma Camera Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides