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Thread: AF of my camera lens is not working.

  1. #1

    Default AF of my camera lens is not working.

    I got a Canon EF-S 18-55mm f/3.5-5.6 Lens that does not focus when AF is turned on and photos taken turns out completely blurry. But it does focus perfectly when it comes to manual focus. Does the problem lies on my camera or the lens?

  2. #2

    Default Re: AF of my camera lens is not working.

    If the AF switch is turned on and it still doesn't AF, then it means that there's something wrong with the AF system in your lens.

  3. #3

    Default Re: AF of my camera lens is not working.

    Ok, thank you so much.

  4. #4

    Default Re: AF of my camera lens is not working.

    Quote Originally Posted by Alexming View Post
    Ok, thank you so much.
    If it still doesn't AF after you troubleshoot, you can bring it down to the Canon service center.

  5. #5

    Default Re: AF of my camera lens is not working.

    How can i troubleshoot?

  6. #6

    Default Re: AF of my camera lens is not working.

    Quote Originally Posted by Alexming View Post
    How can i troubleshoot?
    Make sure that all the necessary switches are on and also test AF on another lens to make sure that the problem is not with your body.

  7. #7
    Senior Member fatigue's Avatar
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    Default Re: AF of my camera lens is not working.

    Most likely it is due to broken flex cable

    Here's a few steps to confirm:

    1. switch to MF
    2. turn focusing ring counterclockwise until it stops
    3. Switch back to AF
    4. Focus on something about 2 meters away from you
    Does it focus?

    Repeat steps 1 to 4 but this time turn focusing ring clockwise
    Does it focus?
    A broken flex cable will focus only on one direction

    Here's a DIY post if you're the kind of guy who likes to fix
    (warning: open at your own risk)
    http://www.clubsnap.com/forums/canon...ant-focus.html
    9815-1974
    FB: Hilos Camera Repair

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