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Old 15-11-2007, 00:01   #1 (permalink)
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Dirty Sensor

i have attempted to search around this site for this as i'm sure other people have posted about it but i couldn't find anything....so anyway...

I appear to have a few dark blurred blobs on my photographs when using a small apperture , these blobs do not go away when i change lens and therefore i can only assume that they are dust on the sensor!

I have no idea how this could happen as i never change my lens anywhere remotely dusty as i'm too paranoid.

i have noticed a mirror lockup function on my d80 and on closer inspection i can see very small dust particles on the sensor itself, i have used a blower brush to blow away a few bits but there still seems to be some there. I'm too scared to touch it basically.

Is there some method of doing this myself or should i send it to jessops or somebody?

Thanks, Josh
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Old 15-11-2007, 01:46   #2 (permalink)
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Re: Dirty Sensor

Quote:
Originally Posted by xanda View Post
i have attempted to search around this site for this as i'm sure other people have posted about it but i couldn't find anything....so anyway...

I appear to have a few dark blurred blobs on my photographs when using a small apperture , these blobs do not go away when i change lens and therefore i can only assume that they are dust on the sensor!

I have no idea how this could happen as i never change my lens anywhere remotely dusty as i'm too paranoid.

i have noticed a mirror lockup function on my d80 and on closer inspection i can see very small dust particles on the sensor itself, i have used a blower brush to blow away a few bits but there still seems to be some there. I'm too scared to touch it basically.

Is there some method of doing this myself or should i send it to jessops or somebody?

Thanks, Josh
Check under your menu button and see if you have a "sensor cleaning" function inside. If you do then you should put your camera into any setting other than automatic and select that. get a football air disperser and blow your sensor really good while holding it forward so that the dust falls out. The big news is that I would recommend you do this each time you decide that you are going to change lenses. It ensures that you dont allow dust to sit in your camera and build up. That is definitely where the spots come from. I am shooting off a fullframe 5D. Its very vulnerable to that. Since employing this practice I have had much longer life between cleanings. Sensor cleanings are not cheap. $75 per cleaning here in Sacramento California. Speaking of which I would have my camera professionally cleaned and then practice blowing that sensor off with every lense change.
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Old 15-11-2007, 07:05   #3 (permalink)
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Re: Dirty Sensor

This is what you want to look at.
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Old 15-11-2007, 07:36   #4 (permalink)
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Re: Dirty Sensor

I use the Copperhill method - seems a bit daunting at first but it really is quite easy.
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Old 15-11-2007, 12:39   #5 (permalink)
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Re: Dirty Sensor

cheers for replying and thanks for the link, i've spent quite a bit of money lately on my camera (filters, remote shutter release etc.) so not sure whether i'll get another 20 quids worth of cleaning equipment but i guess it's a worthwhile investment
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Old 15-11-2007, 12:48   #6 (permalink)
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Re: Dirty Sensor

Definitely worth it - otherwise you're faced with either lots cloning/healing in PS or sending it off all the time to someone to do it for you (at a cost!)

Apparently the dust can enter not only through the lens aperture but also the storage card and battery access

I use a SensorBrush most of the time (my sensor doesn't have the glass filter stuck on the sensor, so it's more sensitive to scratching) - it uses static to pick up the dust. Works very well until I get something like pollen stuck on the sensor, in which case a similar technique to Copperhill (above)
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