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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 26 Apr 2012 (Thursday) 16:25
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50D viewfinder problem

 
alex.hondsmerk
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Apr 26, 2012 16:25 |  #1

I've just noticed that there is a problem with the viewfinder in my 50D. It seems to have somewhat of a 'zoom burst' effect on the image as seen through the finder - see the photo below for my rendering of it! I've had the camera for a while now, and it's the first time it has behaved like this. The photos themselves are unaffected; the issue is just within the finder. The camera has never been dropped / abused in the slightest, so I'd be surprised if the prism had come loose or something, but it's a possibility...
Has anyone had a similar problem / know of a solution? It's not a fatal flaw as I can still use the camera reasonably well, but it is getting annoying...


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Gripped 50D, 24-105 f/4 L, 70-200 f/4 L, EF-S 17-85, 50 f/1.8 II "L" (external link), Tamron 60 f/2 Macro, Samyang 8mm fisheye, 430EX
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Mashimaro
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Apr 26, 2012 16:29 |  #2

woah, that would be weird to look through.

have you checked to see if the screen has been bumped out of place?

it may even be a prism issue.... :(


Canon 5D4 / Sony A7R2 / Leica M240

  
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alex.hondsmerk
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Apr 26, 2012 16:31 |  #3

I've checked the focusing screen, and it seems to be in place normally - I couldn't move it with the tip of a rocket blower so it's not loose either. There's no unusual rattling or anything either, just the ususal mirror noise if I gently shake it...


Gripped 50D, 24-105 f/4 L, 70-200 f/4 L, EF-S 17-85, 50 f/1.8 II "L" (external link), Tamron 60 f/2 Macro, Samyang 8mm fisheye, 430EX
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John ­ from ­ PA
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Apr 27, 2012 07:24 |  #4

All lenses or just one?




  
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alex.hondsmerk
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Apr 27, 2012 07:48 |  #5

All lenses, it's in the body itself. The photos themselves are fine.


Gripped 50D, 24-105 f/4 L, 70-200 f/4 L, EF-S 17-85, 50 f/1.8 II "L" (external link), Tamron 60 f/2 Macro, Samyang 8mm fisheye, 430EX
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philwillmedia
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Apr 27, 2012 08:02 |  #6

Clean the eyepiece on the viewfinder.
My guess is that it's just sweat/oil from your face that's acumulated over time.
Just give it a wipe and you'll probably find it fixes it.


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-MasterChief-
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Apr 27, 2012 08:06 |  #7

or very carefully wipe down the mirror with a microfibre soft cloth (the ones that come with eyeglasses are perfect). remember to apply very light pressure. it could only be four things: the eyepiece, the prism, the focusing screen, or the mirror. SOL if its the prism, you will have to send it in to Canon to have that cleaned. Good Luck!!




  
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alex.hondsmerk
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Apr 27, 2012 09:39 |  #8

Viewfinder is clean, so's the mirror.
New development; if I completely turn the dioptre adjustment knob counterclockwise, it rattles when shaken. If it's done up all the way clockwise, it doesn't.
Hmm...


Gripped 50D, 24-105 f/4 L, 70-200 f/4 L, EF-S 17-85, 50 f/1.8 II "L" (external link), Tamron 60 f/2 Macro, Samyang 8mm fisheye, 430EX
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50D viewfinder problem
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