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07-04-2016, 12:47 AM   #16
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Is it possible to replace the focusing screen?
says this:
EOS DIGITAL REBEL XTi/EOS 400D DIGITAL The focusing screen cannot be replaced.

Unfortunately, It would seem you now have an expensive paperweight. Next camera, don't "clean" inside yourself. That's a job for professionals.
Sorry.

07-04-2016, 12:51 AM   #17
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QuoteOriginally posted by Gelicalien Quote
My camera won't take pictures in auto focus , how do I fix this??

My camera won't take pictures in auto focus after I put some toothpaste on my focus screen in attempt to clean it, was that a mistake? Help please.
Would the focus screen have an effect on picture quality??

---------- Post added 07-04-16 at 12:52 AM ----------

QuoteOriginally posted by calsan Quote
Is it possible to replace the focusing screen?
says this:
EOS DIGITAL REBEL XTi/EOS 400D DIGITAL The focusing screen cannot be replaced.

Unfortunately, It would seem you now have an expensive paperweight. Next camera, don't "clean" inside yourself. That's a job for professionals.
Sorry.
I'll remember that. Would the focus screen affect picture quality?
07-04-2016, 12:54 AM   #18
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QuoteOriginally posted by Gelicalien Quote
I have looked everywhere for a replacement to a cannon xti focus screen and I haven't found a thing):


Well this is a Pentax forum.


Have you tried here?


Click the link ---->>>>>> https://www.focusingscreen.com/index.php?cPath=21_45&osCsid=895d0c64f92ad31f0e12db1898dfdbe2
07-04-2016, 12:57 AM   #19
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QuoteOriginally posted by Gelicalien Quote
Would you happen to know how to fix this??
Did you make sure to put the screen back in place CORRECTLY and click that little metal holder all the way back in place?

Did you verify that your camera is set to auto focus mode?

07-04-2016, 12:57 AM   #20
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Focus screen issue

Does a messed up focu screen affect picture quality ??
07-04-2016, 12:58 AM   #21
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Nope.
07-04-2016, 01:03 AM   #22
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QuoteOriginally posted by alamo5000 Quote
Did you make sure to put the screen back in place CORRECTLY and click that little metal holder all the way back in place?

Did you verify that your camera is set to auto focus mode?
I did, the problem remains.
07-04-2016, 01:07 AM   #23
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mmmmm

mmmmmm

07-04-2016, 01:13 AM   #24
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QuoteOriginally posted by Not a Number Quote
Toothpaste contains mild abrasives. You should avoid touching the surface of focusing screens with anything as the surface is very delicate and scratches very easily. Solvents should also be avoided. An abrasive will have changed the light transmission quality of the focus screen. There is nothing that can be done to restore the proper surface of the screen other than replacing it. AF in Liveview should still work.
The focus screen looks clear, why wouldn't it focus?
07-04-2016, 01:14 AM   #25
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QuoteOriginally posted by Gelicalien Quote
The focus screen looks clear, why wouldn't it focus?
It's possible that residue from the toothpaste also got onto the mirror and into the AF sensor (which sits behind the mirror), which may have damaged or obscured it.

Adam
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07-04-2016, 01:18 AM   #26
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QuoteOriginally posted by Adam Quote
It's possible that residue from the toothpaste also got onto the mirror and into the AF sensor (which sits behind the mirror), which may have damaged or obscured it.
There's absolutely no way to fix this? :/
07-04-2016, 01:18 AM   #27
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QuoteOriginally posted by Adam Quote
It's possible that residue from the toothpaste also got onto the mirror and into the AF sensor (which sits behind the mirror), which may have damaged or obscured it.
Or on the contacts of the camera mount.
07-04-2016, 01:22 AM   #28
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QuoteOriginally posted by Gelicalien Quote
There's absolutely no way to fix this? :/
I'm sure Canon could repair your camera, but getting a new/used Rebel might be cheaper.

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07-04-2016, 01:22 AM   #29
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It can affect the metering or if you are using manual focus through the viewfinder.
07-04-2016, 02:24 AM - 1 Like   #30
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didn't we discuss this here?

https://www.pentaxforums.com/forums/58-troubleshooting-beginner-help/325037-c...oothpaste.html
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