Dust?!
missourigrl
Registered Users Posts: 8 Beginner grinner
When I look through the viewfinder I can see several specs of dust. I blew air with a rubber blower on the mirror. I think that's where they are stuck but that didn't get it off. How can I get the dust off my mirror?
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Canon 20D, Canon 50 1.8 II, Canon 70-200 f/4L, Canon 17-40 f/4 L, Canon 100mm 2.8 Macro, Canon 430ex.
Well, when I take the lens off and look closely at the mirror I can see some dust specs on it. Is it safe to use the soft bristles on the end of the blower to carefully try and wipe the dust off the mirror?
Dust that you see when looking through your viewfinder is not on the mirror, but on the ground glass at the top of the mirror box and beneath the pentaprism on the top of your camera.
You can try to dislodge this with a rocket blower ( DO NOT use canned air!!)
Or you can try to clean it with a clean camel's hair brush or a sensor brush, but it is generally not worth the effort. I try to just ignore them unless they are really distracting when composing.
The dust bunnies you see when looking through your viewfinder are not captured in your pictures - they are out of the lenses shooting axis.
Generally it is a bad idea to try to clean the mirror in an SLR as it is a front surface mirror - there is no glass protecting the silver plating - and hence it is easy to permanently scratch the mirror surface. Great care is appropriate if you feel your mirror needs cleaning. A dirty mirror has NO effect on the image captured - only how it looks in your viewfinder.
There is a description of an SLR with pictures here :
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