the mirror that is under the large mirror (only visible if the mirror is at a certain angle, otherwise flips up) was filthy on my camera. I blew some pure argon at it (don't have a puffer) and now it seems good.
Erik_L Goldmember 3,160 posts Likes: 1 Joined Oct 2009 Location: Minnesota More info | Dec 06, 2009 17:00 | #16 the mirror that is under the large mirror (only visible if the mirror is at a certain angle, otherwise flips up) was filthy on my camera. I blew some pure argon at it (don't have a puffer) and now it seems good. Canon EOS 1D III
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Dec 06, 2009 17:50 | #17 I just checked the mirror under the large mirror. It seems spanking clean but i blew it with a puffer on all mirrors like you asked. The autofocus problem still exist.
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vietiscool Member 105 posts Joined Aug 2009 More info | Dec 06, 2009 17:59 | #18 is it happening on every lens? Canon EOS 550D / EOS Rebel T2i / EOS Kiss X4 • EOS 70D • PowerShot S95 | Sony DSC-RX100M3 | Canon EF 50mm f/1.8 II • EF 55-200mm f/4.5-5.6 USM • EF 85mm f/1.8 USM | Sigma 17-50mm f/2.8 OS HSM • 30mm f/1.4 EX DC HSM
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Dec 06, 2009 18:00 | #19 vietiscool wrote in post #9147032  is it happening on every lens? Only have 1 lens with me at the moment. In live view mode it was able to focus.
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apersson850 Obviously it's a good thing  More info | Oh yes, I do understand the problem. The other times I've heard about it, there has been some dust somewhere in the optical path towards the AF optics at the bottom of the mirror box. Anders
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Dec 06, 2009 18:02 | #21 apersson850 wrote in post #9147049 Oh yes, I do understand the problem. The other times I've heard about it, there has been some dust somewhere in the optical path towards the AF optics at the bottom of the mirror box. If blowing air in there doesn't help, then I'm afraid your's is bad... Thanks for your help though.
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apersson850 Obviously it's a good thing More info | It's not that it's too dark, and you are in Servo AF, and thus don't have any AF assist light from any flash? Anders
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tkbslc Cream of the Crop 24,604 posts Likes: 45 Joined Nov 2008 Location: Utah, USA More info | Dec 06, 2009 18:08 | #23 I would just Call canon tech support before you start prodding around. If it is under warranty, let them worry about it. Taylor
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Erik_L Goldmember 3,160 posts Likes: 1 Joined Oct 2009 Location: Minnesota More info | Dec 06, 2009 18:10 | #24 apersson850 wrote in post #9147066 It's not that it's too dark, and you are in Servo AF, and thus don't have any AF assist light from any flash? this. Canon EOS 1D III
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Dec 06, 2009 18:11 | #25 apersson850 wrote in post #9147066 It's not that it's too dark, and you are in Servo AF, and thus don't have any AF assist light from any flash? I'm under a good amount of light. Still not able to focus on anything even with One shot or AI Focus with flash assist.
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Replaces Goldmember 1,079 posts Joined Aug 2009 More info | Dec 06, 2009 18:13 | #26 is it on AI-Servo???
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Dec 06, 2009 18:14 | #27 tkbslc wrote in post #9147095 I would just Call canon tech support before you start prodding around. If it is under warranty, let them worry about it. I figured. I have this Canon USA Inc about 1 hour and a half away from me... would it be possible to make the drive there to have them fix it and get it back the same day?
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Dec 06, 2009 18:14 | #28 Replaces wrote in post #9147133 is it on AI-Servo??? No.
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K6AZ Cream of the Crop  More info | Dec 06, 2009 18:27 | #29 Before going to Canon, do a hard reset. Pull the power and clock batteries and leave them out for a couple of minutes. This will reset everything back to factory defaults and you can start over.
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Dec 06, 2009 18:35 | #30 How can I access the clock battery?
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