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12-04-2010, 07:50 PM   #1
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fogged viewfinder.

Ok, I know I'm a complete idiot. I knew better than to do this but there was a little piece of something in my camera. It did not effect images but could bee seen through the view finder. I tried to gently blow it out (yea, with my mouth). It was the middle of the night and I wasn't thinking (I know I should have used a blower). so now the viewfinder is fogged up. I tried leaving the lens off the camera for a day hoping it would dry out, but no luck.

Is there anything I can do myself to try and correct this? The fogging does not effect images but its very annoying. I'm also worried that if there is moisture in there it will make its way to the sensor. This is an ist-ds by the way.

12-04-2010, 09:52 PM   #2
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That seems.. strange. Where did you blow, onto the focusing screen? (or did you try forcing air through the eyepiece or something, would be all else I could think you tried. )

I'm having trouble imagining what your breath could have done... Whatever you do, don't touch the mirror or the screen. One suggestion is to try and clean the eyepiece thoroughly: it might possibly have not been your breath at all, but just some skin oils smeared on the eyepiece: that can look pretty foggy if incompletely-cleared off.
12-05-2010, 12:14 AM   #3
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Put your camera in the sun for a couple of hours.

By precaution, remove the SD card and the battery.
12-05-2010, 01:19 AM   #4
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If it is water vapor only it should evaporate on its own. Actually, since there is the implication of the water in your breath condensing it could be that what you see now is not from your breath but from bringing the camera in from the cold where the water vapour from the air will condense when it gets in touch with the cold surfaces of the camera. If this is the case this should in all likelyhood evaporate on its own too, but in the future it would seem worth putting the camera into a suitably large ziplock bag before stepping inside from the cold and removing it from the bag only after it has had a change to warm to the room temperature to avoid condensed water inside the camera.

12-05-2010, 01:28 AM   #5
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Do you have any drying gel/silica gel? You can find it a hardware or craft store or gun stores as well as some of the larger camera stores will stock it. Sometimes marketed for drying damp rooms so it may be in a big container. You can take this stuff and ziplock it with your camera.
12-05-2010, 07:57 AM   #6
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thanks for all the advise. I blew inside the camera (towards the roof which I guess is the focusing screen). The camera has been inside for weeks before and days after this. I mainly use it for family photos right now (I have young children and don't have a lot of tie for leisure shooting right now).

I double checked the viewfinder on the outside (cleaned it with dry cloth) and that doesn't seem to be it. It does seem to be going away a bit on its own over time though. I can probably dig up some silica gel packets at work (not for a few days though). Do i put it with them and the lens on, or lens off? Can water evaporate out of the camera with the lens on? I assume off would be better but worry about dust or further contaminants.

Come to think of it, are body caps vented on the sides or do they seal?
12-05-2010, 08:26 AM   #7
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QuoteOriginally posted by ripit Quote
thanks for all the advise. I blew inside the camera (towards the roof which I guess is the focusing screen). The camera has been inside for weeks before and days after this. I mainly use it for family photos right now (I have young children and don't have a lot of tie for leisure shooting right now).

I double checked the viewfinder on the outside (cleaned it with dry cloth) and that doesn't seem to be it. It does seem to be going away a bit on its own over time though. I can probably dig up some silica gel packets at work (not for a few days though). Do i put it with them and the lens on, or lens off? Can water evaporate out of the camera with the lens on? I assume off would be better but worry about dust or further contaminants.

Come to think of it, are body caps vented on the sides or do they seal?
Well, if it's going away, it's pretty surely got to be moisture of some kind. Probably the best way to deal with it would be to put the camera, without lens and body cap, in a box with some dessicant (or like a bag of Minute Rice made of some permeable cloth.) I wonder if it could possibly have gotten into the pentamirror, if it's been taking so long to clear.
12-05-2010, 08:44 AM   #8
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I'd remove the lens for better air circulation for faster drying. With a clean plastic bag dust and such should be no problem; the bag with the camera (body) and the silica gel should be sealed anyway for the silica gel to be effective. Also, if you have a blower you could try that to help the evaporation to work faster.

It seems strange that this should be so persistent though ... ?

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