Question about Canon 24-105mm f/4L IS USM EF Lens

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Canon 24-105 lens. Manual focus ring is stuck, does not turn, auto focus works fine. Thanks, Mark

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  • Canon Master
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Place the lens on the palm of your hand and tap to see if any dirt comes off.Use a pressure air to blow into the gaps to see if the jam can be released off. If not your will need to open to clean and release.

Posted on Oct 01, 2010

  • buber Oct 01, 2010

    This problem is not caused by dirt. The ring has about 0.5 mm of free play, and then hard mechanical stop (resistance). The problem happened all of the sudden, not by getting worse over time. Seems like something got loose and blocks ring movement.
    Thanks, Mark.

  • ampanzera Jan 31, 2011

    Did you ever fix this problem? I am experiencing this with a canon zoom.

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1 Answer

Manual focus ring stuck


Sand or some kind of dabre in in focus gears, Needs to be takin apart and cleaned, This is in the middle of the lens,

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First off, try gently turning the focus ring on your lens while it is on auto focus mode (DO NOT force it). Sometimes a minor bump on the lens can cause the focus ring to come off the tracks. Try that and see if the lens start auto focusing again. I find that this solves the issues a lot of the time. If that doesn't give you any results then you'll need to take your lens to an authorized Canon service center for repairs. Hope this helps!

Hiram
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110 East 13th Street
New York, NY 10003
212-673-8400

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WHEN I OPEN MY CAMERA THERE IS A WORD E18.


Hi,

Canon E18 error shows when the lens gets stuck while trying to extend.
  • This error indicate that focusing ring got stuck or jammed due sand, dust, may be due to external shock caused by dropping the device. try compressed air. With a fine tip blow off gun around lens barrel. It should remove all dust and sand. Turn the camera on this will solve the problem.
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  • You can try to turn camera ON at the table (facing it to the ceiling), don't put camera down face to the floor when opening.
If motor is running but lens won't retract sometimes lens would slip off with the gear or break off a tooth in the gear when it gets dropped. Try to gently move the lens barrel around with the finger and see if it is moving, but if tooth or gear is broken lens will move once or twice then it will stuck again.

Else your camera need to be disassembled to get at the focusing ring at Service Center.

Thanks and have a nice day

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mmmh... sounds like you on your own here. I found this page whilst looking for a solution to a stuck manual focus ring on my own 70-200mm sigma. The focus ring does not move beyond a millimeter or so, but the lens continues to work fine in auto focus.

Not sure what happened to it. If you found out how to fix his, do contact me.
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Your Sigma 28-300mm doesn't have a HSM-motor as far as i know. When you switch it from MF to AF, you also have to disengage the manual focusing ring by pulling it towards the camera, or pushing it away from the camera. Using the AF without unlocking the manual focusing ring may damage the AF motor. 
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Pulling gently on the focus ring worked for us. Exactly what the Dr. ordered. Slight pop, maybe 1/16" movement, and the lens is working again!

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1 Answer

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I doubt if there is anything you can do yourself. The manual focus may have debris under the ring or is in need of parts. I would leave this one to a tech.

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