Auto Focus on 18-55mm lens not working

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08-27-2020 11:24 AM
Up until today my 18-55mm lens has been working just fine while on AF; however, today when I took my camera out I found that the AF feature wasn't working. It works fine when on MF. The thing that I find wierd is that the AF does work [kind of] if the camera is on live view [using the screen to track a shot rather than the view finder], but that even that is limited. Any ideas on how I'm able to fix this?
Thanks in advance!
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08-27-2020 12:32 PM
@rca1992 wrote:Up until today my 18-55mm lens has been working just fine while on AF; however, today when I took my camera out I found that the AF feature wasn't working. It works fine when on MF. The thing that I find wierd is that the AF does work [kind of] if the camera is on live view [using the screen to track a shot rather than the view finder], but that even that is limited. Any ideas on how I'm able to fix this?
Thanks in advance!
What camera, and what is the full model number of the lens? Does the model number end with "STM"?
"Enjoying photography since 1972."

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08-27-2020 05:03 PM
The camera is a Canon T3i. The lens is an EFS 18-55mm with image stabalization.
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08-27-2020 05:11 PM
Please tell us all the numbers and letters in the model name.

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08-27-2020 05:24 PM
8936229483 -- I hope this is the right informaiton needed because it is the only identifying number that I can find on it.
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08-27-2020 05:43 PM
No, around the inside of the filter ring it will say something like EF-S 18 - 55 F/3.5-5.6.... We need all those numbers
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08-27-2020 05:43 PM
@rca1992 wrote:8936229483 -- I hope this is the right informaiton needed because it is the only identifying number that I can find on it.
No, that isn't the model number. Look at the art that says "EF-S 18-55mm". There should be more stuff written after it.
"Enjoying photography since 1972."

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08-27-2020 05:51 PM
Okay, hopefully I've got it this time. Clearly you can tell I'm a rookie! I have a canon EFS 18-55mm image stabalizer macro 0.25/0.8ft lens.
Thanks for your help!
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08-28-2020 09:29 AM
Did you by chance try to focus it while it was focusing? Even if you just accidentally touched the focus ring?
EOS 1D, EOS 1D MK IIn, EOS 1D MK III, EOS 1Ds MK III, EOS 1D MK IV and EOS 1DX and many lenses.

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08-28-2020 10:13 AM
That is a possiablity. Is there a quick fix that I can try?
