How to repair Canon lens EF 85mm F/1.8 USM - AF not working
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- เผยแพร่เมื่อ 9 ต.ค. 2024
- In this video you can see how to repair Canon lens EF 85mm
f/1.8 USM - AF not working
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Lenght: Long (14+ Minutes)
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00:17 VonnBoyd - Tonic | • VonnBoyd - Tonic
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08:30 Liam Thomas - A Touch Of Light | • Liam Thomas - A Touch ...
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#Canon #camera #repair #lens
OMG!!! You show how to remove the rear lens group! That's exactly what I needed! Thank you!
Thanks now I know how to get access to both side of the lower lens element for dust removal.
hi better send the lens to us :)
Pleasure to watch! Thank you!
Thx mate ;)
Ugh that looks easy enough, where's my plyers?
can u fix Yongnuo 85mm 1.8 Af turns off because the focus ring is rotated forcefully (forgot to turn off the AF)?
Hi , yes, we can repair it. Please send more info on service@digi-service.eu. Thank you!
@@DIGISERVICEBG is the motor has broken?
Berita & Pengetahuan need to check. It is hard to give you estimation without revision of the lens.
HI THANK YOU FOR the video
where we can get the washer give me link where to buy please ,
because i trayed to flatter but actualy not working
my was exacly in the same condition of your in the video
Hi ,
we can help you, but first you need to send your request to service@digi-service.eu.
Regards!
Thanks a lot from Brazil!
Your video is just what I was looking for and helped me a lot.
Thank you ! If you like the video, hit LIKE and subscribe to our channel. Every share help our videos to reach and help more people.
Thanks from Russia
Thank you! :)
Thanks for the video! Where did you get the washer? Thanks!
DJ Big Hoss hi and thank you for the comment:) I have them from scrap ( now have a lot USM units defective, I use the rings and the GMR sensors)
Having trouble removing the screw that holds the pcb to the body and starting to strip. Any suggestions?
Hi send the lens to us and we can fix it ! Thank you !
Hey, thanks for the video. My lens is squeaking when focusing, do you think I can just add some silicone spray to it? If yes, where the grease should be applied? Thanks!
Hi, no, need to check the focus section motor or the whole unit :)
What is the fix?
That's most likely the refraction-based optical encoder. It's just under the first lens group so access is easy using a #00 Phillips (7 screws total). Lenses abhor silicones, graphite and anything that sprays. Silicones creep, graphite spreads and sprays lack any control so keep them all far away!
That encoder is a transparent strip with a fine grove pattern and a transparent puck that rides on it with the same pattern. The pitch of the noise is from those grooves. With age the puck chatters from friction and the whine becomes noticeable. Coating with plastic lube will make it quiet but it can't function properly with anything that fills the grooves when air is needed. What has worked well is to put a tiny bit of Krytox on the puck and strip and then buff it out of the grooves using lint-free swabs. That leaves a fine, invisible layer of PFPE and PTFE so that the required air-gap still occurs and breaks the light. If the focus stutters after buffing---buff more!
@@antilogism Which part(s) are you referring to in the parts catalog? My 85mm 1.8 can manual focus, but in AF it stutters back and forth.
f20c.com/stuff/canon/partslist/EF%2085%201.8%20USM.PDF
@@BradLawrence An interior component of "YG2-0057-000 D 1 FOCUSING UNIT" but it's accessible when the front lens assembly is lifted off.
It may just be contamination. Oil or grease on the encoder will interfere with the path that the light takes through the encoder. It will loose it's place and start hunting if that happens.
thanks for posting
on my lens the af is ok but when using manual focus it does not rotate easily needs more rotation for the focus meter to rotate also
My Auto Focus doesn't focus all the time what could be wrong with it. Thanks
Hi, i have one thats the same problem, and what was the thing that u replaced? Is it the one with zigzaged washer?
Hi, no it is the o ring washer
For stiff manual focus ring, but AF working fine, can I do the very first step only in order to clean and lube it for the manual focus ring stiffness?
Hi , no, no need to lube :) Just look at the 5:55 and you can figure out . Manual focus and Auto focus are connected fuctions which comes from one only unit - USM :)
Form where do you buy the exchanged washer? Or how du you modified it??
Hi, send email to service@digi-servce.eu and we will answer to you! Thank you!
Tried and husband was helping me but he ended up breaking it more so I’m getting a new lens I guess 😅 so I’m upgrading to a new lens but downgrading to the Meike lens
Hi, i hope you've learned something with this try :)
Thanks, thumbed and subscribed! Would be awesome to watch similar video for Canon EF 100mm f2 USM lens. Have you ever repaired that one?
B G Hi , thank you for the comment :) will be soon :)
@@DIGISERVICEBG Oh, splendid, I'm already waiting! :)
Good job
Thank you!
What would you estimate this repair service to cost for this specific lens with this issue?
Hi write email to service@digi-service.eu with detailed explanation of the problem and we will give you estimation.Thank you!
How much would it cost for me to send you my 85 1.8 and do this same repair?
Hi , aprox 100 euro :)
My Yn 85mm 1.8 haven't worked in her aperture. The ring stoped in f16 and don't want to come back normally.
Hi, need to replace flex or the whole diaphragm unit.
Thanks you
Where do we buy the parts???? They're not on eBay.
Hi we can provide parts. Send email to service@digi-service.eu and we will answer to you!
@@DIGISERVICEBG Okay will do!
@@DIGISERVICEBG Thank you emailing now
How to repair if the diaphragm does not work from f.5.6 onwards?
Hi you can search the problem in the motor of the diaphragm or positioning of the switch (diaphragm unit).
What we're the symptoms before you started? Manual focus working and auto not working?
Hi, as you can see in the beginig of the video you see that the manual is not working. As you can read in the description also AF is not working :) The title was too long so i use the shorter title but demonstrate the problem :)
@@DIGISERVICEBG That part of the film was very short so to me it was not clear that the manual focus was not working. But thanks for clearing that up for me. :-)
Steve Liddle no problem, you are welcome :)
I need to repair the iris. It’s not moving
amanwithnohands search it on eBay
is it possible to remove just the front glass element without dismantling other parts? I just found a tiny fungus on top of the front lens element, and it really bothers me alot even though it does not have any ill effect on the photo
HI, you can try it , but after dissasembling the lens groups you need to make AXIS alignment which is imposible without equipment.
Thanks for the feedback buddy, AXIS alignment is not to be messing with, guess i have to get the lens professionally done.
Thanks but this was more than I am comfortable doing. I can't afford to mess my lens up. 😔 There's no repair shop in my area
Hi send the lens to us and we can repair it.
now i broke auto focus button
So wait you lost me with the washer. So take the old ones out and put on new ones. And my 85mm is kinda different I have wires and you dont
hi, need to insert other washer or play around with the spring.
DIGI SERVICE I fixed it now is a small gold washer I don’t know where it came from