Incense

by Bart Arondson

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My viewfinder (not LCD) has spots of dust on it. What is the best way to clean the inside? I have cleaned the outside with a QTip.

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I think this really depends on the model - what are you using? Although often you can get to the focussing screen if you take the lens off and look above the mirror (assuming DSLR). –  Hamish Downer Jul 16 '10 at 17:37
    
30D. Don't have it handy, so I can't look see it if its accessible. I figured I would have to mail it in to Canon. –  reuscam Jul 16 '10 at 17:46

2 Answers 2

up vote 10 down vote accepted

I've cleaned the inside (bottom side of prism) recently of my 30D. You can easily spot the viewfinder element when you take off the lens. I then use the same sensor swabs and eclipse fluid as I use for the sensor. I suggest you bend the sensor swab stick 90 deg so you can sweep is more easily across the viewfinder. I think I also cut off a bit of the sensor swab since it was a bit too large. It is still awkward to clean it like this though!

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If it is a Canon, it may not be so much the "inside" of your viewfinder as it is the bottom of the prism, where your focusing screen is. I have a 450D, and I know that if I pop off my lens, and leave the mirror down, I can see right up to the bottom face of the viewfinder prism. I am not sure how the 30D is constructed, but I doubt that a fundamental design factor of a prominent DSLR manufacturer has changed much.

I have used a soft qtip a couple times to blot larger specks of dust off my viewfinder.

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