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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 09 Aug 2011 (Tuesday) 13:31
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1D Mark III

 
dwarrenr
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Aug 09, 2011 13:31 |  #1

I've searched herein and could not find this issue...maybe my search abilities are crap but anyway, at times when I look through the view finder the subject appears out of focus (the image that is captured is tack sharp), and other times it looks in focus. At first I just thought the VF needed adjusted but have come to realize it is an issue with the camera. I've noticed after locking focus I'll see the 'image' jump in the VF but then look nice and sharp. I'm sure I'll have to send it to canon, but wanted to know if anyone has seen this before or have an ideal of what is happening here.

Thanks in advance.

Warren


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Dooms_day
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Aug 09, 2011 14:58 |  #2

Could it be the di-optic adjustment wheel got turned and now it doesn't match your eye? Or the mirror is offset or blocked by something and canon should check that out.


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dwarrenr
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Aug 09, 2011 15:33 |  #3

Dooms_day wrote in post #12905276 (external link)
Could it be the di-optic adjustment wheel got turned and now it doesn't match your eye? Or the mirror is offset or blocked by something and canon should check that out.

Yeah at first I thought it [di-optic adjustment wheel if that is what you call it] but it's no help. Thinking the mirror is not going back fully thus causing the issue.


D. Warren Robison
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joeseph
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Aug 09, 2011 15:37 |  #4

dwarrenr wrote in post #12904741 (external link)
I've noticed after locking focus I'll see the 'image' jump in the VF but then look nice and sharp.

are you perhaps using a lens with IS?


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dwarrenr
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Aug 09, 2011 15:45 |  #5

joeseph wrote in post #12905491 (external link)
are you perhaps using a lens with IS?

That very well could be the jumping issue, but I typically have the IS/OS off and IIRC it does happen on non-is lens as well...going to start keeping track if it happens on all the lens or just a few.


D. Warren Robison
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F5Chaser
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Aug 10, 2011 09:58 |  #6

I too have been having that problem and as recently as yesterday evening shooting with my 300 2.8.
I keep thinking that my eyes are blurring somehow so I blink to try and clear it but with no luck.
It happens shooting with IS on and off and with all my lenses.


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Aug 11, 2011 14:25 |  #7

I have just sent my MK III in to Canon so I will report back when I find something out.


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dwarrenr
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Aug 11, 2011 14:49 |  #8

Yes please do. With the fall sports under way, I really don't want to use my 7D only...so I'll have to try and stick it out until next summer.


D. Warren Robison
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Aug 22, 2011 21:24 |  #9

Sorry Warren but it appears I have not answered our question with the return of my Mk iii from Canon. Here are the service details: "Your product has been examined and it was found that the adjustment
of the AF assembly was incorrect causing inaccurate auto focus.
Adjustments were carried out on the auto focus assembly and product
functions were confirmed. Other electrical adjustments, inspection and
cleaning were carried out. Shot count 178,898."

It appears my camera was one that had AF issues but was never sent in for the fix. There is no other explanation for what "Other electrical adjustments" means so maybe the blur through the eyepiece was fixed. After I have a chance to shoot some I will post any issues if there are any.


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dwarrenr
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Aug 23, 2011 07:15 |  #10

Thanks for the update Von.


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Aug 23, 2011 09:13 |  #11

My 1D MKIII was one of the cameras whose serial number "WAS NOT" considered to be one of the
effected cameras but when I sent it in for a checkup, the repair order had the same exact description.
The cam came back and the auto focus seemed fined. My adjustments for Micro Focus were not needed any longer. Unfortunately after one week, the auto focus display lights no longer lit up so I
had to send it back in. It returned this time where I do need some Micro Focus adjustments. It seems a bit off but it's too close to football so it will have to wait. I wish the "specs" were tighter
when it comes to factory tolorances.

Joemt.




  
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dwarrenr
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Apr 03, 2012 08:09 |  #12

Ok, with a current down time with HS sports I sent the 1DIII in and got it back last night (total time from shipping to getting it back was 10 days). Issue, as stated, was a broken mirror assembly. Looks great now.


D. Warren Robison
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cfcRebel
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Apr 03, 2012 08:52 |  #13

dwarrenr wrote in post #14201806 (external link)
Ok, with a current down time with HS sports I sent the 1DIII in and got it back last night (total time from shipping to getting it back was 10 days). Issue, as stated, was a broken mirror assembly. Looks great now.

Approximately how many clicks has the mirror box gone before this problem occurred? The other member said his was around 178K. I was wondering if mine needs to be checked.


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dwarrenr
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Apr 03, 2012 09:51 |  #14

cfcRebel wrote in post #14201988 (external link)
Approximately how many clicks has the mirror box gone before this problem occurred? The other member said his was around 178K. I was wondering if mine needs to be checked.

I don't really know. To my surprise they did not give me any info other then what they found and what they did. I was expecting a nice little printout showing the shutter count. But I would be surprised if I had over 120k on it, and would guess it to be around 90k.

If you can live without it for a couple of weeks, go ahead and send it in for a cleaning and a checkup. But I don't think the mirror box will show it's about to break until it's gone.


D. Warren Robison
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cfcRebel
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Apr 03, 2012 09:56 |  #15

dwarrenr wrote in post #14202328 (external link)
I don't really know. To my surprise they did not give me any info other then what they found and what they did. I was expecting a nice little printout showing the shutter count. But I would be surprised if I had over 120k on it, and would guess it to be around 90k.

If you can live without it for a couple of weeks, go ahead and send it in for a cleaning and a checkup. But I don't think the mirror box will show it's about to break until it's gone.

I'll make sure i at least have a backup when the MkIII reaches that mileage. Thanks again.


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