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Thread: Can't unlock Auto FOCUS. Canon.

  1. #1

    Default Can't unlock Auto FOCUS. Canon.

    Hello.

    I have a problem with my lens which I cant make it to AUTO focus and i have to use Manual at all times.

    When i set the lens to AF, it will focus at the same length no matter whatever object i aim at. I have read through the manual, on how to unlock focus so and so...but nothing happen.

    18-55mm 450D.

    Thank you.

  2. #2

    Default Re: Can't unlock Auto FOCUS. Canon.

    Hello,

    Try to remove the lens first and clean the contacts, but be careful.
    replace it properly unto the mount and if nothing happened maybe a visit to the csc will help.
    ╬Pachelbel in D .357cal

  3. #3

    Default Re: Can't unlock Auto FOCUS. Canon.

    Quote Originally Posted by billycadiz View Post
    Hello,

    Try to remove the lens first and clean the contacts, but be careful.
    replace it properly unto the mount and if nothing happened maybe a visit to the csc will help.
    thanks but i have tried doing that.

  4. #4

    Default Re: Can't unlock Auto FOCUS. Canon.

    Have u check whether the switch on the camera body is swicth to AF instead of M? (I'm a Nikon user, not sure whether Canon have the same switch). Hope this helps

  5. #5
    Moderator daredevil123's Avatar
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    Default Re: Can't unlock Auto FOCUS. Canon.

    Check your focus mode. What is it set to?

  6. #6

    Default Re: Can't unlock Auto FOCUS. Canon.

    when u set to AF and aim does the lens AF motor actually "move" but unable to focus or simply does not "move"?
    Nikon D700, N24-70 f2.8, N70-200 f2.8, Sigma 50mm f1.4.

  7. #7

    Default Re: Can't unlock Auto FOCUS. Canon.

    Quote Originally Posted by RezzShaz View Post
    when u set to AF and aim does the lens AF motor actually "move" but unable to focus or simply does not "move"?
    when i switch from MF to AF, it will move.
    but when it is on AF, no matter how many photos i shoot and at different distance, it will not move. the focus has been locked.

  8. #8
    Moderator Octarine's Avatar
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    Default Re: Can't unlock Auto FOCUS. Canon.

    Quote Originally Posted by coffeemilk View Post
    when i switch from MF to AF, it will move.
    but when it is on AF, no matter how many photos i shoot and at different distance, it will not move. the focus has been locked.
    Sounds like a case for CSC. You can try with a different lens if you happen to have one at hand. Could help to find out whether the issue is with the lens or the body.
    EOS

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