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0
votes
1answer
78 views

What to do when autofocus on Canon 85mm f/1.8 not working?

My Canon 85mm's AF isn't working. But here's the thing, it recognizes there's a lens mounted, it gives focus confirmation, and I can even set the aperture, but it does NOT recognize that it's an AF ...
1
vote
1answer
34 views

Tamron 90mm SP Macro manual focus locks

I've been shooting film on a Canon AE-1 Program with a Tamron 90mm Macro SP lens. Until recently, the lens worked perfectly, but all of a sudden it won't focus farther than 10ft. To my knowledge it ...
0
votes
0answers
90 views

Where to fix Canon lens, other than Canon

I have a 70-200 2.8L II lens that was broken on a photoshoot (dropped 1 ft). The glass is intact (thank you, UV filter) but there is some issue inside the lens where the images aren't focused and the ...
0
votes
0answers
31 views

Help is needed in Fixing Canon lenses USM's focus motor [duplicate]

I have the Canon EF lens, but the USM motor looks dead. I need help in order to get it fixed so I can use this lens again. Unfortunately a "focus by wire" system is used in this lens and I have no ...
0
votes
1answer
46 views

IS auto-shutdown causes SLR to stop detecting lens - Canon 70-200 2.8L IS MK I

I've tested this on my 6D and my friends' 60D. Use case: [Only occurs in Video mode] 1) Activate the IS function during Video mode. Does not have to be recording (but is reproducible in the same ...
3
votes
2answers
120 views

Can lens coating be reapplied?

If the lens coating is torn or worn of by extended use, is it possible to reapply it? I don't mean a do it yourself repair, but rather a repair performed by the manufacturer. It also may very well not ...
0
votes
0answers
132 views

Where can I find a service manual for Tamron AF 28-300mm f/3.5-6.3 XR LD Aspherical Macro Zoom Lens (for Nikon)?

I'm a photographer from Sri Lanka. I disassembled my Tamron AF 28-300mm f/3.5-6.3 XR LD Aspherical Macro Zoom Lens (for Nikon) to clean it myself. But now, it's difficult for me to reassemble it. I ...
2
votes
2answers
207 views

Can I polish a scratch off of lens contacts?

I have a Canon lens (ultrasonic 17-85mm) and the biggest of the contacts is scratched slighty. It is now showing a connection error. It works only from time to time. Is there a way to polish the ...
3
votes
1answer
127 views

Why would a Nikon lens be missing its rubberized focus ring?

So, I was browsing eBay for Nikon 85mm f/1.8 lenses and I came across this listing. The remarkable thing is the neat absence of the focusing ring, but otherwise pristine appearance of the lens. I was ...
2
votes
5answers
377 views

Wrong screwdriver broke Canon 70-200mm small screw. Any way of unscrewing it?

As shown above, I cannot unscrew anymore the screw of a Canon 70-200mm... : What tool, technique, could help me get it out ? (before I start drilling into it...) Where can I buy brand new screws ...
2
votes
3answers
206 views

Can I repair minor abrasions on my Canon 14mm F2.8 USM front lens element?

My Canon 14mm 2.8 front lens, after a few years of use, has slight marks of abrasion. Very slight bruises. Is is technically possible to recoat this lens to render its original finish? (I discovered ...
4
votes
2answers
430 views

What tools and spare parts are needed to repair Canon 200mm f/1.8 USM prime lens?

The focus of Canon 200mm f/1.8 L seems to be entirely USM driven. Manually rotating the black ring has no impact at all on mine, as it is broken. What tool set would be the best I could buy (from ...
1
vote
3answers
602 views

Can you remove scratches from a lens with peanut butter?

An article appeared on Apartment Therapy that claimed that a scratched camera lens can be repaired using peanut butter and/or toothpaste. This strikes me as a horrible idea that could make a bad ...
1
vote
1answer
263 views

What is the DIY repair potential of a Sigma 24-70mm f2.8 EX DG Macro (non HSM) lens?

Summary: Can anyone provide useful experience based comment on the potential for or cost of repair of the "zoom bearing" mechanism in this lens specifically or with lenses liable to be similar? My ...
2
votes
1answer
246 views

How to fix stuck aperture?

I have a Micro-Nikkor 55 mm 1:2.8 lens. The aperture appears to be stuck. Is it worth trying to repair the lens? Are there any good guides for disassembling the lens?
1
vote
1answer
316 views

How to fix a zoom lens that is sticky at a particular focal length?

I have the Canon 18-55mm lens. When I zoom out from 55mm to 18mm, the lens works fine until 22mm, where it seems to be stuck and you must then use a bit more force. I saw in many sites that this is ...
4
votes
2answers
929 views

How to loosen a Canon 75-300 lens (zoom ring is quite stiff to turn)

My new Canon EF 75-300mm telephoto lens and the zoom ring is quite stiff. Is the lens faulty or is there a way to loosen it up?
2
votes
1answer
207 views

Why are the rings on my Sigma 28-80mm lens stuck?

I use a Sigma 28-80mm on a Canon Rebel EOS. Neither the zoom nor the focus rings will turn. Is there something that I could diagnose the problem? Can I fix this myself or will I have to send it in for ...
4
votes
1answer
334 views

Servicing a Voigtlander Bessa from 1929 - how to open the lens assembly?

I recently acquired a Voigtlander Bessa from 1929. It works but there's a dead insect into the lens assembly (between the glasses) and some fungus/dust. I'm trying to open it to remove the insect and ...
3
votes
2answers
776 views

Broken Canon 28 -135 mm lens

I have a 28 - 135 mm Ultrasonic; the mechanism for the auto focus has failed, and there is some plastic bouncing around inside. Is it worth repairing this lens? Second question, assuming I don't get ...
5
votes
2answers
866 views

Focus ring stuck on Canon 17-85mm lens

I have a Canon EF-S 17-85mm f/4-5.6 IS USM lens on which the focus ring is stuck/jammed. Is this something I could easily repair myself? If so, are there any detailed instructions on-line on how to ...
6
votes
3answers
617 views

Have I broken my Canon 28-135mm lens after DIY repair?

Last week I removed the front element from my Canon 28 - 135mm lens to remove a grain of sand from the lens. It was easy to remove the 4 screws, take of the top layer of glass and remove the grain. I ...
0
votes
1answer
2k views

How to fix inoperative autofocus in Canon 70-200 F4 L USM?

This lens has been sitting on the shelf for years and I recently hauled out my DSLR to play with it. Turns out the autofocus no longer works. I'm wondering if there's any kind of remedy for this short ...
5
votes
1answer
1k views

How do I remove a broken lens mount ring from a lens?

Today my Nikon d90 was drop with attached Nikkor 18-200mm lens. The lens detached from the body and ripped of the metal ring with screws from the body. How can I fix it? I don't know how to remove the ...
2
votes
5answers
9k views

What should I do when my Nikon AF-S lens won't auto focus?

I have a Nikon 35mm f/1.8G AF-S DX I bought for my Nikon D5100, it's only a couple months old, never been dropped or anything, and it all of a sudden won't auto focus. Anyone know if this is a simple ...
6
votes
1answer
300 views

Will a firmware update/change erase Canon's service center lens calibration settings?

Since it's pretty cheap in Korea, I sent all my prime lenses and my new Canon 60D to be calibrated at the local Canon service center so they can be "matched" to the body. If I install a newer updated ...
4
votes
1answer
587 views

What might cause stuck focus on a manual lens?

So, today I dropped my ME Super. When I picked it up I realized that the focus ring of the 50mm f2 lens attached didnt turn. My question is, what could cause this? Could it be that the threads inside ...
3
votes
3answers
443 views

Is there any damage that a lens can have that is unrepairable?

Just wondering after I dropped my lens and had it repaired is there any specific kind of damage that would ruin a lens to the point where you'd be better just buying another used one. I'm ...
2
votes
0answers
269 views

What to do about mold/fungus in a camera lens? [duplicate]

Possible Duplicate: Why fungus form in lenses, and how to get rid of it? I am living in a tropical country where humidity is pretty high. I never thought it would be possible that ...
2
votes
1answer
2k views

How do I fix a lens with a problem returning to autofocus mode?

I bought a Canon EF 28-105mm f/3.5-4.5 II USM lens for my Canon 350D. It works mostly fine, except after switching from AF to MF, I can't return to AF mode. After I switch MF->AF, the lens doesn't ...
4
votes
3answers
317 views

How do I troubleshoot Canon EF100-400L IS USM failure?

I use my EF100-400 on a Canon 10D. While in IS and auto focus mode, I was shooting a soccer match when the lens abruptly failed to focus, and I got an error message on the camera. I turned off the ...
5
votes
1answer
202 views

Should I get a lens repaired or buy a new one?

I have a 28-135mm Canon lens that I picked up a few years ago for $200. The zoom has started sticking in the last couple of days. It still focuses fine, but can be annoying trying to zoom in/out ...
7
votes
4answers
858 views

Is it worth repairing a broken kit lens?

I dropped my camera while on holiday last summer. Thankfully, my camera wasn't damaged but the kit lens has lost the ability to autofocus and the UV filter and 58mm to 52mm filter step-down (I use it ...
11
votes
4answers
658 views

Experiences with lens repairs - Quality degradation?

A friend of mine fell with my new Canon EFS 15-85mm lens - nothing happened to the camera, but the lens is... well see for yourself: As you can see the top part of the lens looks bent towards the ...
5
votes
3answers
8k views

How can I fix a broken lens/autofocus?

My 35mm f2 canon lens's autofocus has stopped working. In manual focus mode the focus wheel is locked, and in autofocus mode the focus wheel spins freely but does not change the focus at all. In ...