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#1
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20D - Speck of dust on viewfinder
There's a speck of dust in the viewfinder of my 20D. It doesn't bother me
that much since it doesn't come out on the images, but it would be nice to get rid of it. I tried a blower and the corner of a lens cloth on the outside of the viewfinder, but it appears the speck is somewhere inside. It changes sharpness if I change the dioptric adjustment. Is there anything I can do about it? -- The email address used to post is a spam pit. Contact me at http://www.derekfountain.org : a href="http://www.derekfountain.org/"Derek Fountain/a |
#2
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In article .net,
Derek Fountain wrote: There's a speck of dust in the viewfinder of my 20D. It doesn't bother me that much since it doesn't come out on the images, but it would be nice to get rid of it. I tried a blower and the corner of a lens cloth on the outside of the viewfinder, but it appears the speck is somewhere inside. It changes sharpness if I change the dioptric adjustment. As has been pointed out, it's on the focus screen. The screen makes a great collecting point for grunge that's catapulted up there by the mirror, and the ground nature of the surface means things stick to it. You can *try* an air blower, but IME, the vast bulk of things that get stuck to thye focus screen are there for the long term. It might fall off eventually. |
#3
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In article .net,
Derek Fountain wrote: There's a speck of dust in the viewfinder of my 20D. It doesn't bother me that much since it doesn't come out on the images, but it would be nice to get rid of it. I tried a blower and the corner of a lens cloth on the outside of the viewfinder, but it appears the speck is somewhere inside. It changes sharpness if I change the dioptric adjustment. As has been pointed out, it's on the focus screen. The screen makes a great collecting point for grunge that's catapulted up there by the mirror, and the ground nature of the surface means things stick to it. You can *try* an air blower, but IME, the vast bulk of things that get stuck to thye focus screen are there for the long term. It might fall off eventually. |
#4
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"Chris Brown" wrote in message ... In article .net, Derek Fountain wrote: There's a speck of dust in the viewfinder of my 20D. It doesn't bother me that much since it doesn't come out on the images, but it would be nice to get rid of it. I tried a blower and the corner of a lens cloth on the outside of the viewfinder, but it appears the speck is somewhere inside. It changes sharpness if I change the dioptric adjustment. As has been pointed out, it's on the focus screen. The screen makes a great collecting point for grunge that's catapulted up there by the mirror, and the ground nature of the surface means things stick to it. You can *try* an air blower, but IME, the vast bulk of things that get stuck to thye focus screen are there for the long term. It might fall off eventually. I had the same problem and managed to flick it off with a fine brush when the blower did not work. |
#5
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"Chris Brown" wrote in message ... In article .net, Derek Fountain wrote: There's a speck of dust in the viewfinder of my 20D. It doesn't bother me that much since it doesn't come out on the images, but it would be nice to get rid of it. I tried a blower and the corner of a lens cloth on the outside of the viewfinder, but it appears the speck is somewhere inside. It changes sharpness if I change the dioptric adjustment. As has been pointed out, it's on the focus screen. The screen makes a great collecting point for grunge that's catapulted up there by the mirror, and the ground nature of the surface means things stick to it. You can *try* an air blower, but IME, the vast bulk of things that get stuck to thye focus screen are there for the long term. It might fall off eventually. I had the same problem and managed to flick it off with a fine brush when the blower did not work. |
#6
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The dust is on the ground glass focusing plate inside the camera.
If you take off the lens and look up you'll see it. The plate also has the autofocus marks you see etched on it. Give the plate a couple of puffs with a blower.. Don't touch it with a cloth or brush or you'll probably wind up with even more dust. Good call, that's just where it was. One puff and it was gone. I wonder where it landed... } -- The email address used to post is a spam pit. Contact me at http://www.derekfountain.org : a href="http://www.derekfountain.org/"Derek Fountain/a |
#7
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The dust is on the ground glass focusing plate inside the camera.
If you take off the lens and look up you'll see it. The plate also has the autofocus marks you see etched on it. Give the plate a couple of puffs with a blower.. Don't touch it with a cloth or brush or you'll probably wind up with even more dust. Good call, that's just where it was. One puff and it was gone. I wonder where it landed... } -- The email address used to post is a spam pit. Contact me at http://www.derekfountain.org : a href="http://www.derekfountain.org/"Derek Fountain/a |
#8
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The dust is on the ground glass focusing plate inside the camera.
If you take off the lens and look up you'll see it. The plate also has the autofocus marks you see etched on it. Give the plate a couple of puffs with a blower.. Don't touch it with a cloth or brush or you'll probably wind up with even more dust. Good call, that's just where it was. One puff and it was gone. I wonder where it landed... } -- The email address used to post is a spam pit. Contact me at http://www.derekfountain.org : a href="http://www.derekfountain.org/"Derek Fountain/a |
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