Canon EF 50mm f/1.8 II disassembly and assembly

[@AlanQSmithee]

So much better than the other 50mm disassembly video I saw, where he basically broke it because he clearly didn't know the right way to separate the parts

[@CamerasLensesEtc]

Thank you for your comment!

[@margaritamukhina7140]

Thank you so much for such a quality manual. I've removed all the dust and fix the motor on my lens using your video. And sent you a little ''thank you'' on your PayPal.

[@CamerasLensesEtc]

Thank you for the feedback and the donation!

[@photo_hcb]

Thank you once again for helping me understand and to fix another lens! :D

[@CamerasLensesEtc]

Happy to help!

[@janeclements317]

Always helpful and informative. You just saved another lens, thank you!

[@CamerasLensesEtc]

Great to hear that!

[@GraphicManInnovations]

thank you, just a question,, what is the patches for? protecting the plastic from the screws? @7:20

[@CamerasLensesEtc]

Those pins holds the two main part of the lens together.

[@GraphicManInnovations]

@@CamerasLensesEtc thank you sir

[@kamilhorak7375]

Perfect instructions, many thanks! My lens fell apart once in the past but thet time it was only the manual focusing ring and I was then able to return it without a need for any guide. Today, it was worse, but still success! Sad to say that the lens is really worn out right now and I doubt it would remain functional for long time. But it is actually a surprise that it lasted perhaps 15 years until the failure, considering it was already used when I bought it years ago. Not so bad for a plastic made one and the trails it absolved with me.

[@CamerasLensesEtc]

Interesting that it lasted so long... it is such a cheap lens, with very low build quality. If you need a replacement, I would highly recommend the STM version.

[@kamilhorak7375]

@@CamerasLensesEtc well, decided to buy the 1.4/50 USM instead.... Using it with both DSLR and an older Eos 300V and I already have the 1.8/28 USM, which is clearly better as for its mechanical quality.

[@CamerasLensesEtc]

@@kamilhorak7375 Most of the 50/1.4 USM I had had very poor image quality, finally after trying about 5 lenses of that I found one which had decent sharpness and low chromatic aberration. I tried the Sigma 50/1.4 HSM (non-art), but the quality is worse than the Canon 50/1.4. The Canon 50/1.8 STM is a sharp lens with fast focusing.

[@zoulhhh]

I dropped mine and the upper part came loose. Nothing broke. Your video (the red circles) helped to bring it together again. Thank you!

[@CamerasLensesEtc]

Glad it helped!

[@BradInTucson]

Any suggestion on how to clean dust out of the rear lens element? It looks sealed, but the dust particles suggest otherwise.

[@CamerasLensesEtc]

Have you disassembled the lens and cleaned the other side of the rear lens element?

[@BradInTucson]

@@CamerasLensesEtc Yeah, the rear element looks like a sealed cylinder with glass at either end. I can't see an obvious way to open it up to clean it.

[@CamerasLensesEtc]

@@BradInTucson You can try to separate them with a suction cup.

[@BemCorrido]

Is there a way to clean inside the front group? Looks like there is two pieces of glass covered by that "conical" part (5:30). Mine got i little dusted inside.

[@CamerasLensesEtc]

Generally, no. Usually they are "glued" together using the black plastic which holds the lens elements. Hoever what you could do is to try to remove the front lens using a suction cup. I did that on a Yongnuo 50/1.8 lens: I used a suction cup to lift up the front lens and it slided out from the plastic part which holds it. I haven't tried on Canon, but the construction of the two lenses are quite similar, so maybe it works on the Canon also.

[@BemCorrido]

@@CamerasLensesEtc nice! In that case have you ever tried ultrasonic cleaner for fungus removal? By the way, wich solution is best for fungus removal: Isopropyl Alcohol or Hydrogen Peroxide + Amonia?

[@The-four-o-five]

Mark the position of the infinity stopper (2:43). It is adjustable for a reason.

[@CamerasLensesEtc]

Thank you for your comment!

[@neilcolaco]

Thanks, this was super useful!

[@CamerasLensesEtc]

You're welcome!

[@popotade4621]

Thanks for the video. It was hard to understand how to place the 2 little metal plates. Also, I wasn't able to correctly attach my front element and focus ring.

[@ormoem8769]

my lens was dusty inside i cleaned it following this but after i assembled everything back together there is know a subtle crackling sound when you move the focus as well as using the autofocus mode how do you fix these any help?

[@CamerasLensesEtc]

I would disassemble the lens again, put the two main lrns parts together, and move tje focus back and forth to see what is causing this issue... that way you can see if the gears are at the right place.

[@ArcanePath360]

Thanks. My lens has lots of dust on the inside glass despite hardly any use.

[@CamerasLensesEtc]

You're welcome!

[@Gzalo]

Hi! Thanks a lot! After trying to reassemble it, it seems that I can't place the wedges, they are really loose and fall out. Is that normal? Managed to assemble it without them, but should I try to glue them in place anyway?

[@CamerasLensesEtc]

Normally there is glue on them, and when I assemble the lens, and I'm sure that I don't have to disassemble it again, then I apply some superglue on the surface of the wedge, then I put it back.

[@Gzalo]

@@CamerasLensesEtc Thanks! I guess that those pieces aren't something critical that could affect the lens alignment and sharpness, right? Looks like they are just ensuring that the clips stay tight even if the lens is hit?

[@CamerasLensesEtc]

@@Gzalo They keep the lens in one piece.

[@manusudha4269]

Very helpful video. Take care .

[@CamerasLensesEtc]

Thanks a lot

[@javierromero3736]

Thank you for this video! My *very* cheap 50mm is now working as it should :)

[@CamerasLensesEtc]

Glad it helped!

[@nailkrush-revista_en_linea]

Great video. I was able to fix my lens.

[@CamerasLensesEtc]

Glad it helped!

[@PhilipLeichauer]

Awesome. Time to find the screwdrivers!

[@raulrodrigues2307]

Succesfully cleaned fungus! But I'm getting Error 01 after reassembly, help!

[@raulrodrigues2307]

Disassembled and assembled it again, it was the silver bracket that controls focus (assures all gears have contact) in AF mode, that needs to be lifted up when assembling, in case anyone has the same problem. =)

[@CamerasLensesEtc]

I'm glad that the problem was solved.

[@pumpedupkicks5791]

@@raulrodrigues2307 My lens still in error 01, how did u do?

[@danarwidiantoro]

Thanks, i made it fixs my fix by my self. Really really huge thanks❤

[@CamerasLensesEtc]

Thank you for your comment, I'm glad that my video has helped you!

[@fl4sh2002]

Thank you, your video help me fix my lens

[@CamerasLensesEtc]

Thank you for your comment, I'm glad that my video has helped you.

[@LucasNSantos]

Me salvou aqui. Obrigado 👏👏👏 Greatings from Brazil

[@CamerasLensesEtc]

I'm glad that my video was helpful!

[@edml8908]

Thank a lot man it's really helping ❤️

[@CamerasLensesEtc]

Glad to hear that

[@wojciechknitter5476]

Thank you. All your tips are professional, especially the marked points important for proper connection. My lens is working again! Unfortunately I lost one of the two small plastic angles with two small holes (dont know how it call). I have fastened one up and it's a bit loose. What can I do?

[@CamerasLensesEtc]

I think you mean the wedge. I haven't found any for sale on ebay, so I don't know where you can buy it. Alternatively, You can glue the lens parts together. Of course you have to be careful with that, apply just a very small amount of it, and make sure it doesn't get inside the lens. I did that in one of my video: "Canon EF 50mm f1.8 II repair the lens broken into two pieces"

[@wojciechknitter5476]

​@@CamerasLensesEtc Thanks, I'll do it. I also have a Canon 18-55 lens, the autofocus does not work there. Any suggestions?

[@CamerasLensesEtc]

Check my "Canon EF-S 18-55mm f3.5-5.6 IS disassembly and assembly for replacing the focus flex cable" or "Canon EF-S 18-55mm f3.5-5.6 II disassembly for replacing the focus flex cable" videos depending on the lens.

[@ruedigerplueckhahn2840]

Thanks man, very helpful to sort out the problem that my lens just fell apart! The part where put back in the wedges could be explained in a greater detail I think, it is hard to see how to place those tiny pieces.

[@ArcanePath360]

Might be too late now, but the holes are the bit that are face down which tuck in.

[@pumpedupkicks5791]

Why my lens making weird sound after assembling and mounted to the cam, and communication between the camera and lens is faulty, need to clean the lens.

[@pumpedupkicks5791]

*lens contact

[@CamerasLensesEtc]

My guess would be there is something with the aperture. Try to disassemble and assemble the lens. Does the camera gives Error 01 message? (If yes, then most likely this is aperture problem.)

[@pumpedupkicks5791]

@@CamerasLensesEtc how to fix the aperture when i dissamble it

[@bladebala]

thanks, this is the best video!!

[@CamerasLensesEtc]

You're welcome!

[@strangermv3149]

very helpful!!! thank youuu so much!! Can u make some video how to clean manually fungus on my lense???

[@CamerasLensesEtc]

You can clean your lens by following this tutorial to separate the two lens groups, and you can clean the lens elements in between.

[@agootjeremiahgwyna.750]

Thank you so much!

[@CamerasLensesEtc]

You're welcome!

[@ricardinho2234]

El mejor video que vi sobre este accesorio!

[@CamerasLensesEtc]

Gracias!

[@MrSpiderPK]

Thank you so much

[@CamerasLensesEtc]

I'm glad my video has helped you!

[@noahmuller5658]

I followed your steps thoroughly, but at the end all the inner tube pops out while focusing. Do I have to align the two thin silver rings under the focus ring in a special way?I see no other way to prevent the innertube and all the lenses to come out. Hence I will come!

[@noahmuller5658]

...Hints are welcome!

[@CamerasLensesEtc]

The metal rings hold the focusing ring in its place. If only the inner lens element is slides out, check my other video on repairing the 50/1.8 II lens which is broken. If the lens elements with the focusing ring slides out, then yes, the metal rings should be aligned, and the screw and the lever should be in the lens under the AF/MF switch panel.

[@sergeyprokhorov1038]

helpful and informative

[@CamerasLensesEtc]

Thank you for your comment, I'm glad you like it!

[@kchnrd]

Namasthanks! :) you're a blessing!

[@CamerasLensesEtc]

You're so welcome!

[@Betarti]

Superb!

[@CamerasLensesEtc]

Thank you! Cheers!

[@BemCorrido]

Do you know how to polish the glass? Got mine scratched :(

[@CamerasLensesEtc]

The glass shouldn't be polished, it cause distortions. If the lens is scratched, there is nothing you can do. Fortunately, it can't be seen on the taken photos.

[@francescomartino89]

Thanks

[@CamerasLensesEtc]

You're welcome!

[@marklorence3664]

Wedge is Very Big deal in My Camera Lens?

[@CamerasLensesEtc]

That is used to keep the two parts of the lens attached together.

[@ArcanePath360]

Okay since I did this my AF no longer works properly 50% of the time it lands out of focus.

[@CamerasLensesEtc]

Check the autofocus unit, especially the metal part on the AF motor to make sure nothing is bent or damaged.

[@ArcanePath360]

@@CamerasLensesEtc Thanks. I've tried to replicate the problem the next day and it's now landing in focus most of the time. I'm wondering if it was because it was a poor light day and at f1.8 it struggles to find focus? It doesn't seem to have the problem with contrast focusing, so I'm guessing it's a feature. I have noticed that the f2.8 70-200 is also not always landing in focus in low(ish) light. I'm now wondering if it's the camera I just bought (second hand 6D)

[@edersonporto6450]

Thanks!!

[@CamerasLensesEtc]

Welcome!

[@Junebreath]

Спасибо! Отлично помогло разобрать объектив, всех благ!

[@CamerasLensesEtc]

Thank you for your comment, товарищ!

[@nadirelizalde]

Muchas gracias!!!!!!!!!

[@CamerasLensesEtc]

You're welcome!

[@jonathanotrujillo]

Definitely subscribing!

[@CamerasLensesEtc]

Thank you!

[@TheCollince]

you saved my 50mm

[@CamerasLensesEtc]

You're welcome! :)

[@fan19820210]

very useful.

[@CamerasLensesEtc]

Thank you for your comment!

[@Renan_Nascimento]

Amazing

[@owen9997]

O

[@Marco-yi7kq]

Thanks

[@CamerasLensesEtc]

You're welcome!