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Old Mar 10, 2010, 8:23 PM   #1
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Default How big a repair job is this?

My 5D Mark II has a problem. If I take the lens off and look at the where the mirror is, I can't see all of the mirror because some kind of screen or sensor that is attached above the mirror has fallen down and it looks to me like it suppose to stay up, but it won't.

I took a lens off to let someone borrow the lens. Got the lens back and put it on and tried to take a photo and this had happened.

What happened and how big a problem is something like this to fix?

I am so disappointed. It was my daughter's last swim meet of the year and I have almost zero photos from tonight's match.
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Old Mar 10, 2010, 9:04 PM   #2
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It sounds like your focus screen came loose from it's frame. You may find this .pdf guide to be useful. It's a guide on how to install a third party split prism focus screen in a 40D or 50D (but, the 5D Mk II should be similar). It assumes you're using the supplied (plastic tipped) tweezers to help prevent damage to the screen when grasping it by the leading tab on it.

http://www.katzeyeoptics.com/files/install8.pdf
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Old Mar 11, 2010, 7:34 PM   #3
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Hey Jim
Thanks a bunch. I watched the video, read the material... called Canon just to check and see if there were any secrets I should know about and there were none.

So I washed my hands, found some tweezers and got it put back together again.

Jim, you sir are a steely eyed missile man!

Faithfully Yours,
FP
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Old Mar 12, 2010, 9:14 AM   #4
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I didn't know they had a video. Anyway, I'm glad you got it working again. Now, if you ever decide to replace your focus screen with a different one (for example, one of the split prism types to make manual focusing easier), you'll already have some experience. :-)
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Old Mar 12, 2010, 11:27 AM   #5
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Quote:
Originally Posted by FaithfulPastor View Post
Jim, you sir are a steely eyed missile man!
I presume that means everything is A-OK!
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Old Mar 12, 2010, 11:57 AM   #6
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It's a quote from Apollo 13.

A compliment paid to the engineer who figured out how to make sound air filter fit into a space designed for a square one after the oxygen tanks exploded and CO2 levels were dangerously high.
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Old Mar 12, 2010, 12:26 PM   #7
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Actually, it's first recorded use was when the same engineer solved a problem following a lightning strike to Apollo 12 shortly after launch.

And "A-OK" is from the Mercury Program.
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Last edited by TCav; Mar 12, 2010 at 12:29 PM.
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