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07/22/2005 09:59:29 AM · #1 |
| I've got a speck of dust sitting on one of my elements that I can see. I don't know how it got there but I need it gone. I need this lens for tomorrow. I know I can edit out the speck in photoshop but would like to not have to dothis everytime I use this lens. HELP!!! |
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07/22/2005 10:11:55 AM · #2 |
| Do you see the dust on lens directly or is it showing up in the image? If it’s showing up in the image it’s on the sensor. |
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07/22/2005 10:12:53 AM · #3 |
Originally posted by cainn:
I've got a speck of dust sitting on one of my elements that I can see. I don't know how it got there but I need it gone. I need this lens for tomorrow. I know I can edit out the speck in photoshop but would like to not have to dothis everytime I use this lens. HELP!!! |
Does it actually show on any images?. Dust inside the lens shouldn't be a problem since it will be so OOF it won't even show up. Dust on the sensor is a different story.
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07/22/2005 10:24:43 AM · #4 |
If you are seeing dust spots in your images, it's likely on the sensor.
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07/22/2005 12:30:06 PM · #5 |
Sorry it took so long to reply, I can see it right there on the second piece of glass. when I take shots with this lens it shows up in my photos, but when I switch to a different len , no speck. So I don't think it't the sensor.
Message edited by author 2005-07-22 12:30:43. |
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07/22/2005 01:05:57 PM · #6 |
Do the test described here. Do it with the lens you suspect, and with another lens. I'm betting the dust patterns on the images are the same.
It's nearly impossible for dust inside a lens to show up, in focus, on a pic. Note I did say "nearly."
I highly doubt that the dust speck in the lens is the problem. Do the sensor dust test, and clean if necessary.
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07/22/2005 02:27:55 PM · #7 |
This looks like a pretty informative site about ccd cleaning.
//www.pbase.com/copperhill/ccd_cleaning
But my question is this: everybody talks about dust on their sensor, but is dust on the mirror ever a problem?
also I have the same situation with dust that is very visible inside the lens. Dang... I hate dust.
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07/22/2005 02:34:12 PM · #8 |
I thought it would need to be a pretty serious size piece of dust to show up from the lens?
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07/22/2005 02:39:36 PM · #9 |
Originally posted by WhidbeyPix:
...is dust on the mirror ever a problem? |
The mirror just redirects light up to your viewfinder. It flips out of the way when you take a photo, so it has no affect on image quality. Dust inside your lens will decrease contrast by an immeasurably small amount, but it will not show up in a photo because the light inside your lens is too defocused to form an image of the speck. |
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07/22/2005 03:52:48 PM · #10 |
| Front element dust will do nothing really. Now the back elements, that's a different subject all together. Those will be noticeable if big enough and sometimes even when they are small. |
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