iFixit - Answers With Device "Camera Lens"

Camera Lens: How do you clean a DSLR lens

Tue, 26 Feb 2019 09:54:38 -0700

how would you clean a digital slr lens

that has fungus in it?

i love the part you have on taking a banana apart.

⟐ Answered Şubat 26, 2019 at 9:54 GMT-7

Nikon Lens: AF-P 18-55 lens autofocus issue

Thu, 21 Nov 2024 02:25:54 -0700

The lens suddenly stopped auto focusing. What may be the issue ? The camera is autofocusing with other lens but not this one. I have tried to clean it and re attach it but the problem persists.

⟐ Edited Kasım 21, 2024 at 2:25 GMT-7

Canon EF 28-135 f4.0 IS USM: Canon 28-135 f/4.0 IS USM Lens resist on turning

Fri, 25 Dec 2020 02:41:04 -0700

Hey guys

i totally no idea why does my lens resist on twisting whenever i zoom in or zoom out, i does require a certain amount of force just to twist the barrel of the lens.

how to fix this?

⟐ Answered Aralık 25, 2020 at 2:41 GMT-7

Canon L Lens 17-40mm: How do you disassemble and clean this lens?

Sun, 22 Jan 2017 13:55:35 -0700

Just need a thorough cleaning guide?

⟐ Answer accepted Ocak 22, 2017 at 13:55 GMT-7

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 Ocak 03, 2026 at 17:44 GMT-7

Canon EF 28-135 f4.0 IS USM: Zoom not working broken?

Sun, 20 Oct 2024 18:19:04 -0700

I'm not sure that this is the same lens as mine but this is my problem: I was trying to but my camera in the bag but the zoom was all out so it wouldn't fit. I tried to zoom out and I did but it was stuck and I had to force it a little and after forcing it it doesn't zoom in anymore. The ring turns perfectly but it does nothing. I also hear a little noise inside like a lose peace? Did I broke my lens?

⟐ Answered Ekim 20, 2024 at 18:19 GMT-7

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 Mart 02, 2026 at 1:18 GMT-7

Camera Lens: How do I fix the fungus on the lense

Thu, 02 Apr 2020 18:02:29 -0700

I have Cannon EF 18-55 lens and have got fungus on it how do I get rid of it.

⟐ Commented Nisan 02, 2020 at 18:02 GMT-7

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 Ağustos 29, 2025 at 15:09 GMT-7

Canon Lens: AutoFocus Mode not working

Fri, 22 Nov 2024 17:50:26 -0700

My 18-55 mm lens is not working in AF mode. the outer cylinder is kind of struck and could not focus.

help out with the issue!

⟐ Edited Kasım 22, 2024 at 17:50 GMT-7

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 Şubat 18, 2026 at 19:38 GMT-7

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 Ocak 19, 2025 at 0:28 GMT-7

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 Ocak 12, 2025 at 0:33 GMT-7

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 Kasım 21, 2024 at 12:03 GMT-7

Canon EFS 17-85mm lens: Lens not retracting after zoom in

Wed, 29 Jun 2022 20:49:29 -0700

Lens won't retract after zooming in. I have to push on the front of the lens to get it to retract.

⟐ Answered Haziran 29, 2022 at 20:49 GMT-7

Canon EF 24-70mm f2.8L II USM: Removing a Stripped Screw from Canon 24-70 f2.8 II Front lens assembly

Thu, 21 Nov 2024 20:21:57 -0700

Hi all, I bought a used Canon 24-70 f2.8 II, got it for a great price but the front element was a pretty scratched up. So i called Canon and got a front lens assembly thinking i could replace it myself rather than spending 500-600$ for them to do it. The problem is once i took the front ring off i noticed that 2 out of the 6 screws holding the front lens assembly were totally stripped. I tried a rubber band and I tried glue, nothing worked... I took it to a local repair shop and no luck there either.

Not sure what my next option would be. These are tiny tiny screws not sure a dremel tool would be small enough to make that cut. Also, I have no idea where to buy replacement screws for it.

⟐ Edited Kasım 21, 2024 at 20:21 GMT-7

Sigma 24-70mm F2.8 EX DG Macro: Lens dropped into salt water

Wed, 04 Sep 2019 12:08:30 -0700

Hey community,

I dropped my mirrorless camera and my zoom lens into saltwater earlier today. They were both completely submerged for 15 seconds.

I did not try turning the camera on after getting it out of the water.

I immediately dried it and removed the memory card and battery.

Is there anything I can do to salvage the lens?

Is there anything I can do to salvage the mirrorless camera?

Any insights will help.

With sincere thanks,

⟐ Answer accepted Eylül 04, 2019 at 12:08 GMT-7

Nikon Lens: How to fix a stuck camera lens

Thu, 21 Nov 2024 02:28:47 -0700

A while back I accedentally dropped my camera, and now the small lens that came with it has trouble zooming in and out, it can if I really force it, but it can't do it automatically, it just makes this really awful grinding noise. I can't really afford a replacement or to get it fixed professionally. Any tips on how to fix it myself?

Its the Nikon DX AF-S NIKKOR 18-55mm 1:3.5-5.6G lens for the D5200 Nikon camera

⟐ Edited Kasım 21, 2024 at 2:28 GMT-7

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

Fri, 15 Nov 2024 01:10:57 -0700

I dropped it on the floor n thr is a slight crack at the side of the lens, then it juz cant focus n take

⟐ Edited Kasım 15, 2024 at 1:10 GMT-7

Camera Lens: Is this look like a crack or a scratch?

Tue, 31 Jul 2018 03:43:35 -0700

Lens model: Minolta Maxxum AF 80-200 (F4.5-5.6) (A mount)

Damage pictures:

I inherited this lens in unknown condition for free (along with a mint Minolta 50mm 1:7). These lenses can be used on Sony A Mount and E Mount cameras with an adapter (LA-EA2/4), which is why I took them.

I looked at both the lenses, and while the 50mm passed, the 80-200 has some concerning damage. It feels fine mechanically but I noticed this when I was inspecting the glass for serious damage. I strongly suspect this is a crack or deep scratch. I felt it with a trimmed nail and I feel nothing on the outside as well. Based on the way it's reflecting light, I suspect it's a crack.

I am not 100% sure what the issue is (despite knowing how to identify most lens issues); I've identified it down to 2 potential problems, but I need some additional help because I'm not sure at this point.

Since I feel nothing, I can conclude it was likely 1 of 2 things:

Deep scratch (no impact)
Internal glass crack (WILL have an impact)

Judging from the prices of this lens on the used market, the lens isn't worth getting a professional inspection on. The average price for an excellent copy is ~$15-22, so it's going to be cheaper to buy another copy without this issue if nobody can help ID it. I can see it through the Haze-1 filter the lens came with, if this is a clue how deep it is. I am not sure why the previous owner put the filter on, but I suspect it was installed to mask this damage.

⟐ Answer accepted Temmuz 31, 2018 at 3:43 GMT-7