Hi, do you need to use any lubrication on the AF ring? Or at any part of the camera? I need to change the aperture cable as well...

Do you have this same video for the Tamron 90mm F2.8 DI?

Had the same issue. Opened the lense, one of these were broken. I used the mechanism of a clicker pen which had the same diameter, cut it in the same thickness and it actually worked. The piece I cut was exactly the same as the original and the lens works! Before fixing the lens was making noise when shaken and the photos were blurry at the edges as the internal part was out of alignment. Now it is as new! Hope this helps someone!

Thanks for the tutorial. It is very detailed and has helped me dismantle my objective. I need to change the ring flare because I have 2 broken fixing pins. Where can I buy it? In the video it is at position 15:40 - Thanks in advance

Thanks a lot from France! 2 screw of the lever travel into the objectif ;-). follow the tutorial and it's renew!!! perfect nice job.

я не понял смысл ваших манипуляций.. Вы так и не показали как снимает этот объектив.

你是认真的吗？...

Hello, i have a Tamron 24-70mm f2.8 canon G1, and i have a issue when i record video. The images " jumps" sometimes and I can hear the sound of aperture even though I don't change it, and also subjects appear with some red marks around them, like I'm manually focusing. This is what happens when the image jumps. Plus the recording sometimes stops when the images jumps. . What could be the problem? 🥺🤔

hi thx for the share, could you do a dissembly video on canon ef 70-300 is II usm please, i have one with dust in front lens but dont know how to open to clean it, many thx

Very helpful. I did have a bit of a problem with the double sided tape but managed in the end.

Awesome man ! This isn't as difficult as I thought. Am going to give it a try as I have the same lens 😊

I have its predecessor (28-80mm f/2.8-4), just wondering if that will probably end up having the same issue?

hi thank you for your share, could you do for a Canon EF 70-300 f/4-5.6 IS II USM dissembly please ? its hard to find one video for clean the dust, thank you so much

Hi, nice video Sir, I left my canon 70-200 f4 usm IS in a local repair guy to clean fungus, the front elements are now free of fungus but the rear elements still have visible fungus, I see from your video that the rear lens elements are housed in a black tube structure & it is this I need to access & clean glthe individual lenses myself, have you any tips?

ピントが微妙にズレてるから肝心な所が見え難い｡ ド素人が撮影しているから仕方ないんだろうけど｡

Thanks, this was super useful!

Love this channel. Has the most detailed info about assembly and disassembly

Thank you so much, worked really well.

An excellent guide, thank you very much!

Hi! I have a 18-300. Do you know if the cover ring must be removed the same way as the one of 18-200 or if it is as the one in 28-300?

Hello, I have a question, how do I calibrate the front lens if the pins have been turned without being marked? I have to admit I started turning them before watching this video, as I thought they were screws to remove the lens for cleaning.

Спасибо. Отремонтировал свой G1 X.

Thank you sir for the share, could you do clean fungo inside lens / dissembling of canon efs 60 f2.8 please, many thx 😊

❤ super usefull

Hello! Can the G7x iii lens be used to replace the G7x ii lens?

This super-clear video gave me the confidence to tackle the hunting problem. I got a clean piece of cardboard and created ten large numbered squares to house the big parts. I had a large refrigerator magnet which I divided in the same way, this magnetically held all the screws. I took the same care as you did, cleaning and recleaning the focus strip both lengthwise and perpendicularly with 91% alcohol. I can attest that finding the right size Phillips screwdriver made of high-grade steel is essential. I attached a small powerful magnet to the screwdriver shaft and that made extracting the screws without dropping them easy. At minute 23:00 I could not extend the zoom. It felt locked. It took several tries to realize that my fingers were gripping the inner and outer parts of the cylinder. Finally, I gripped only the outer cylinder and it slid out perfectly. One more thing, my version of the lens did not have a sticker to peel halfway off. Earlier model? Thank you for a most excellent video. I'm going to send you a thank-you donation!

Tried the repair. Screws are glued with loctite somehow, maybe my second hand lens had already been repaired before ? In any case, I screwed up 2 threads of the usm motor. End of the story I think.

Hi, VERY USEFUL!! Have you also a tutorial how to clean the bottom groups of the lens?

Hello friend. I'm happy with your videos, you've taught me a lot. I would like to learn lens maintenance techniques. Do you have some classes to teach?

Hey man, first thx for all your videos, i started to learn how to fix and clean lenses and your videos helped me in all i need. How I'm a beginner, i am buying lenses with fungus or some problems. Recently i bought this 17-40 that the owner said it has no AF, but after cleaning worked fine like a new one (thx to your videos of disassembly). But i got some error, when focusing on subjects 3 feet away to the "infinity" seems like the lens doesn't have energy to do the focus. Now i stepped into this video and want to try it. Do you know that problem? (I'm a Brazilian, i think the word is 'the focus jiggle and doesn't go more') Thx again for all your work here ❤

Dear Camera and Lens Engineer, I have a Canon 70-200mm F2.8 II lens with a strange issue. The image stabilization (IS) is not working when shooting in landscape orientation, causing blurry images. However, it works fine in portrait orientation. Can you please help me diagnose the problem and guide me to the area in the lens that I should inspect? I would appreciate your assistance.❤

please where can i get the first front glass of this lens mine is broken

more videos for EF Lenses pls. Thank you!

You're the best thanks for your precious help..

I have this lens and the part you brushed is covered in mold. Would it be best I go to a repair shop or can I clean it myself?

I have a problem, my dear. When I shoot with a lens aperture of 2:8, it does not give me high focus, and when I raise it to 4:0, there is an improvement. Please tell me what the problem is. Thank you.

Thanks

Hi, i cannot see at which time stamp the cable from the battery i connected to the board. My G7X Mark 1 won't turn on, tested with two original fully charged batteries. I've read maybe a cable came loose - but I cannot see in the video how far I have to go with the diassembly - maybe you might give a hint about the issue of not turning on? (batterys charged, pins in battery case not bend, battery connecters are clean, no camery drop)

Brilliant thanks!! Do you have on on the Sigma 120-300 f2.8 HSM? Great show- Thanks❤

How do I clean the inner lens? The one next to the aperture mechanism?

Thank you so much for your clear and precise video. I followed your instructions and my lens fault was exactly as you described. I now have a perfectly working lens.

Good job.great and easygoing to understanding.thanks

Can I send you the same lens with the same problem and can it be repaired?

Thank you for these videos, I actually repaired my lens, after some issues. First was my crappy soldering with a butane iron, had to get a better modern iron and then redo the solder work after removing my crud . Second was at final assembly the aperture ribbon would not fit as deeply as the original, found it easier to remove the board again, fit the cable as best I could, then refit the circuit board. Confidence was not high, but it worked!!!. My grateful thanks to you, excellent guides.

Great tutorial, was able to fix it without any problems! Thanks

Very helpful to see how to take off the casing. DO you know how I can unjam the top mode dial? It sits on top of the camera, and the smaller dial has become uneven (ie no longer flush against the larger dial it sits on) Many thanks MrCLE

New sub here

Hi. I have 24-105mm lens and if i on the IS . The image jump on either video mode and picture mode whats wrong my lens? Do i need to change the flex cable ?

Hello! Thank you very much for this video, but during the disassembly stage I encountered big problems. When I tried to remove the USM motor screws, it turned out that the bolts were filled with some kind of glue or varnish. I damaged all the screwdrivers and also damaged the screw slots. Could you give me some advice on what I should do in this situation. Thank you in advance.

Thank you! great tutorial video!