iFixit - Active Questions With Device "Camera Lens"

Other Lens: Do you know how to re attach?

Mon, 23 Mar 2026 13:36:02 -0700

it decided to open up on me and messed up focusing, how do i keep this attached?

Ttartisan 23/1.8 af

⟐ Edited by author March 23, 2026 at 13:36 MST

Nikon AF-S VR Zoom-Nikkor ED 70-200mm F2.8G IF: How to fix nikkor afs 70-200 2.8G II ED won't autofocus?

Mon, 02 Mar 2026 01:18:05 -0700

Hi,

I have dropped my nikkor 70-200 afs 2.8G II ED with my camera. I sent them to repair store and apparently they fixed it but I realised that since then my auto-focus with that lens doesn’t seem to work as I get blurry photos. Can someone help me to fix it?

⟐ Answer edited March 02, 2026 at 1:18 MST

Nikon Lens: Nikon Zoom 80-200 ED 2.8 separate the two elements of the first set

Wed, 18 Feb 2026 19:38:55 -0700

Good afternoon, I'm having trouble cleaning the first set of lenses from fungus. I can't separate the two elements of the first set of lenses for the Nikon AF ED Zoom 80-200 2.8 made in Japan. What kind of glue do you use? If any, what solvent can I use? Can it be done with heat? At what temperature? Help!

⟐ Answer edited February 18, 2026 at 19:38 MST

Sigma Lens: Any repair guides or manuals for the Sigma 50-150 2.8 APO?

Mon, 16 Feb 2026 03:32:49 -0700

I need to clean a Sigma 50-150mm 2.8 APO lens; anyone know of a disassembly guide or repair manual?

⟐ Answered February 16, 2026 at 3:32 MST

Canon EFS 18-55 IS Kit lens: Kit lens autofocus not focusing properly

Sat, 03 Jan 2026 17:44:49 -0700

Good afternoon everyone,

Today i present my trusty old 18-55 kit lens (F3.5-5.6) which has been gradually failing. I was teaching someone a bit about cameras and were trying to take photos and it just stopped. When holding the shutter button down half way, the lens focus ring barely moves if at all. This either requires me to manually focus my shots now or use my other non-IS lens (my 75-300 EF).

I use a 450D ancient camera and i have verified the aforementioned zoom lens works with AF perfectly, however not the kit lens.

I would assume my AF motor is toast however does anyone have any suggestions for fixing this apart from tearing it down (I'm going into this blind as there are no guides on ifixit for this seemingly common place lens).

⟐ Answered January 03, 2026 at 17:44 MST

Canon EF-S 18-55mm F3.5-5.6 IS II: Camera EOS 600D doesn't turn on with this lens

Thu, 01 Jan 2026 15:40:25 -0700

Hello, Got a Canon pakkage with Canon EOS 600D camera and two lenses; a 50mm-0,45m/1,5ft and a Canon EF-S 18-55mm F3.5-5.6 IS II. The 50mm lens is working good, but the 18-55mm lens doesn't turn the camera on. The fisrt two times i tried this lens, it was working. After that it didn't anymore. Took out the simcard and batterypack and disconnected the lens. Put everything back in place and the camera was working for a small period of time. Now the camera doesn't turn on with the 18-55mm lens; camera still works good with 50mm lens. Do you have any suggestions? thank you, greetzzz, André

Camera Lens: What is this problem with this lens

Wed, 03 Dec 2025 01:48:31 -0700

Name this problem or how i can fix it

⟐ Answered December 03, 2025 at 1:48 MST

Other Lens: What mount is this lens?

Mon, 08 Sep 2025 13:32:16 -0700

Can anyone identify this lens mount ?

⟐ Answer accepted September 08, 2025 at 13:32 MST

Canon EF 28-135 f4.0 IS USM: AF issues can someone please help

Fri, 29 Aug 2025 15:09:36 -0700

why is my lens not holding focus on AF but MF it works just fine

This is what it is doing

So I got the motor yesterday and but everything back together and now it’s says make sure Lens is attached when in video mode and then when I go to photo the f stop flashes from 3.5 to 0 and the af mode goes from -ai servo to MF idk what I did wrong or if the guy sold me a faulty motor

⟐ Commented August 29, 2025 at 15:09 MST

Canon Lens: How to solve 70-200 f4 is focus slipping issue?

Tue, 22 Jul 2025 09:09:46 -0700

how to solve issue like this.

can any one has a repair guide?

https://www.youtube.com/watch?v=DS9GBM8-...

⟐ Commented July 22, 2025 at 9:09 MST

Canon Lens: The top of my lens is slightly coming off, how to fix?

Wed, 16 Jul 2025 21:19:58 -0700

So basically, the top of my lens is slightly lifting on one side, which can be seen in the picture with my hand in it. Currently, it doesn't seem like too much of a concern, but I am worried that it will get worse.

⟐ Answer edited July 16, 2025 at 21:19 MST

Canon EF 35mm F1.4 L USM: Autofocus hunts back and forth fast and won't lock on subject usually.

Sun, 01 Jun 2025 21:33:16 -0700

Autofocus hunts back and forth fast and won't lock on subject usually. If it is brighter it seems to lock at least in the inside room I tried it in. Wondering what parts fail and how can I get it fixed or dyi at a reasonable price.

Canon EF 70-200mm F2.8 L IS USM: focus ring stops short

Tue, 27 May 2025 14:40:13 -0700

My focus ring is fine to infinity, but stops at 3 on the low end. Can this be repaired?

⟐ Answered May 27, 2025 at 14:40 MST

Canon EF 35mm F1.4 L USM: How to disassemble front

Sat, 24 May 2025 06:25:24 -0700

Someone does know how to remove part ya-3399?

⟐ Answered May 24, 2025 at 6:25 MST

Canon EF 70-200mm F2.8 L IS USM: Canon zoom "70-200 2.8L is" focusing infinity problem

Sun, 19 Jan 2025 00:28:05 -0700

Hi, I have a Canon zoom "70-200 2.8L is"

It has a problem in focusing at infinity.

If the lens is set to 10m and the subject at 500m the focus (autofocus) stops at about 20-30 m

If the lens is set beyond infinity the focus (autofocus) works.

I tried to adjust the trimmers present in the lens (noting the prime references) but I was unable to solve the problem.

I suspect that a slot (the last one) of the autofocus encoder is dirty or something similar.

@zephosk Help Me :-D

⟐ Answer accepted January 19, 2025 at 0:28 MST

Canon EF 70-200mm F2.8 L IS USM: autofocus seems to be hunting endlessly with no resolve

Sun, 12 Jan 2025 00:33:45 -0700

I've recently had this issue, it was dropped, didn't need a new zoom key, now the autofocus seems to be hunting endlessly with no resolve, it was doing it after the drop unless the non functioning zoom ring was set to 135mm (where the lens was stuck), now no matter where the zoom is, no resolve...

⟐ Commented January 12, 2025 at 0:33 MST

Canon EF-S 18-55mm F3.5-5.6 IS II: Can it be fixed easily?

Sat, 28 Dec 2024 18:34:02 -0700

My lens worked well for years and then when taking pictures it stopped focusing normally. I did not drop it and now it won't focus although it will slightly move the focus trying to focus. This is the second lens that this has happened to. My body is a T2i. It does not give errors and looks fine.

⟐ Answered December 28, 2024 at 18:34 MST

Sigma Lens: How to remove ring name on a sigma 24-60mm to clean the front element?

Thu, 21 Nov 2024 21:56:49 -0700

How to remove ring name on a sigma 24-60mm to clean the front element from fungus i don’t have the opening tool if anyone know any ways to remove the name ring that would be helpful ( piece Number 02 in the picture down below )

⟐ Commented November 21, 2024 at 21:56 MST

Nikon Lens: How to fix my zoom on my Nikon 14-24mm

Thu, 21 Nov 2024 12:03:25 -0700

My Nikon 14-24 2.8 lens is stuck and I cannot zoom either way. It’s a fantastic lens and I’m in hopes someone can help with how I can fix it.

⟐ Commented November 21, 2024 at 12:03 MST

Nikon Lens: Stuck polarizer filter on 18-105 lens

Thu, 21 Nov 2024 03:16:21 -0700

I accidentally overtightened an AmazonBasics CPL filter on my 18-105 Nikkor lens and it became stuck. How can I remove it?

⟐ Edited November 21, 2024 at 3:16 MST