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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras
Thread started 07 Jun 2009 (Sunday) 15:40
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lens won't autofocus

 
photobaby
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My XS is about 2 months old and all of a sudden the autofocus on my 18-55mm lens won't work. The red light blinks when the shutter button is pressed halfway, but it won't take a picture. It will take a picture on MF. I tried my new 50-250 lens and it will take a picture using AF. So does this mean there is a problem specifically with the 18-55 lens, or could it be a problem with the camera? I tried doing a search for ideas and it was suggested to recharge the battery even if it looks like it's charged. So I'm doing that now. Any other ideas?

Jun 07, 2009 15:40



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canonloader
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Well, the obvious is, is the switch on the lens in AF or MF? Is the camera in One Shot or AI Servo?

Jun 07, 2009 17:33

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photobaby
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The lens was on AF. It will work on MF but not on AF. The camera is set to One Shot.

Jun 07, 2009 18:45 as a reply to canonloader's post 1 hour earlier.



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photobaby
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Charging the battery didn't help, and I can't get it to focus at all. The red light doesn't blink and the shutter button won't go further down than halfway. It must be a problem with the lens, which is strange because one minute it was working fine, and the next it didn't. I didn't drop it or anything.

So my next question is do I call B&H tomorrow since that is where I bought it? It would still be under warranty. Or should I call Canon?

Jun 07, 2009 18:55



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RDKirk
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photobaby wrote in post #8067440external link
So my next question is do I call B&H tomorrow since that is where I bought it? It would still be under warranty. Or should I call Canon?

After two months, there's no point calling B&H. Call Canon.

Jun 07, 2009 20:14



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Westx
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Look at the contacts on the back of the lens and make sure they are OK. May even clean them off good. If that doesn't work do as Mr Kirk said and call Canon.

Jun 07, 2009 20:29 as a reply to RDKirk's post 14 minutes earlier.



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photobaby
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Thanks, I did clean the contacts and it didn't help either.

Jun 08, 2009 00:11



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tkbslc
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Time to call Canon.

Jun 08, 2009 00:16

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canonloader
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The red light doesn't blink and the shutter button won't go further down than halfway.

That sounds like a button problem to me.

Jun 08, 2009 03:53

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photobaby
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I called Canon and they had me try a couple of things that didn't work. He told me to go ahead and send it in since it is under warranty. After I hung up the phone I started thinking about the MF. The camera would take a pic in MF but it wasn't in focus. I haven't used MF yet, so I tried to turn the focus ring on the lens and after a tiny bit of resistance, it turned. And now the AF works! I think it must have gotten stuck somehow. Do you think this is a problem with the lens, or just something that happens sometime? I don't want to send it in and be without it if I don't have to. We have a vacation coming up soon and I'm really looking forward to using my camera. Since it's just 2 months old I'm leaning towards not sending it in unless it happens again, I still have plenty of time under warranty in case in happens again. Any advice?

Jun 08, 2009 19:50



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canonloader
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Do not mess with it further. Don't use it or turn it. What probably happened is, you got some sand in the part that turns. I did that once, and it ruined the lens when I forced it to turn. It's under warranty. Bite the bullet and send it in and make sure you add a complete written explanation as to what you just found and put it in the box where they will find it.

Jun 08, 2009 20:02

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photobaby
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So even though it is working now you think I should send it in? Won't they just think I'm crazy since it's working?

Jun 08, 2009 20:23



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S.Horton
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No, they won't.

Tell them 'focus ring stiff, AF fails at times'

They'll take it apart and, if nothing is really wrong, they'll still clean it and calibrate it.

Of course, you could do nothing and be fine, too, but whatever caused that problem probably didn't go away because you turned the focus ring.

Jun 08, 2009 20:36

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photobaby
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Ok, thanks that makes sense.

Jun 08, 2009 21:36



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canonloader
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Sorry, site was down for me. No, I would not use it any more. Your supposed to write out what the problem was, so the guys in the shop know what to look for. If you describe what happened, they will take it apart and fix it. I think using it further will just make it worse, and harder to fix in the end.

Jun 09, 2009 07:16

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