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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 08 Jun 2009 (Monday) 01:10
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Black "goober" in viewfinder of 50D

 
camaz55
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Jun 08, 2009 01:10 |  #1

My 50D has a relatively small grey/black blurry spot on one corner in the viewfinder. It does not appear in photos, and I cannot see it on the mirror when I remove the lens, so I am assuming it is between the mirror and the focusing screen. Has anyone else had a similar problem and how was it solved ? I am not currently located in the US, and don't have access to a "trustworthy' canon service site, but would like to fix this as it is very distracting while trying to compose and focus.

Thanks for any suggestions !!


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tgara
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Jun 08, 2009 05:20 |  #2

It is probably a speck of dirt on the focusing screen. I had the same issue with my 40D. I fixed it by removing the lens, tilting the camera body downward, and blowing a few stout puffs of air into the camera body.


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Todd ­ Lambert
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Jun 08, 2009 08:15 |  #3

It's probably up in the prism somewhere. You might be able to remove the focus screen (very carefully) and blow up in there. However, this often will just move the spot around, and in most cases it will quickly reproduce and you'll have several of these bunnies taking nest in your viewfinder.

It is not on the sensor if you can't see it in the photos, so it won't affect IQ at all.

I'd learn to live with it, personally. I had several of these on mine at first. Ended up getting a replacement camera(not for this reason) and brand new out of the box, it has one of these spots already on it. I'm not going to try and remove it, since last time it just added three spots that weren't there previously.

Is you camera new?




  
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Westx
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Jun 08, 2009 09:11 as a reply to  @ Todd Lambert's post |  #4

I had some hair in mine straight out of the box. Finally got a rocket blower and a couple puffs of air and they were gone.




  
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Garry ­ Gibson
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Jun 08, 2009 10:26 |  #5

I had a small hair or something in my viewfinder right out of the box of my 40D. I tried all of the fixes except taking out the focus screen. I sent it back to Canon for a check up, cleaning and focus calibration under warranty and they got it out.

If you're still under warranty, they fixed mine in a day, cleaned the sensor etc. If it's bugging you that might be the way to go.

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Al ­ Mac
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Aug 15, 2009 16:49 |  #6

tgara wrote in post #8069673 (external link)
It is probably a speck of dirt on the focusing screen. I had the same issue with my 40D. I fixed it by removing the lens, tilting the camera body downward, and blowing a few stout puffs of air into the camera body.

Thank you! Following your suggestion just fixed this for me too. Couldn't see it on there with the naked eye but three short bursts with a can of air, on the inverted camera body, solved it.




  
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FullStop ­ Photography
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Aug 15, 2009 19:33 |  #7

Al Mac wrote in post #8465633 (external link)
Thank you! Following your suggestion just fixed this for me too. Couldn't see it on there with the naked eye but three short bursts with a can of air, on the inverted camera body, solved it.

Be careful. Opinions vary but compressed air can introduce chemical residue that may stick to the internals. Better to use a rocket blower, as suggested.


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Al ­ Mac
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Aug 16, 2009 16:02 |  #8

fullcity wrote in post #8466280 (external link)
Be careful. Opinions vary but compressed air can introduce chemical residue that may stick to the internals. Better to use a rocket blower, as suggested.

Oh, one of these:
http://www.the-digital-picture.com …et-Air-Blower-Review.aspx (external link)

OK, thanks.




  
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Black "goober" in viewfinder of 50D
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