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DPChallenge Forums >> Hardware and Software >> Marks on the images - dust or mould?
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Showing posts 1 - 14 of 14, (reverse)
AuthorThread
02/05/2006 04:46:41 AM · #1
Hi all

Just have recently noticed some marks that appeared on some images when shot at narrow apertures and on further investigation realised that they appeared irrespective of the lens on the camera. I can only assume that they are inside the camera. My question is what is the most likely source of the problem? Will these marks be on the mirror? How do I know whether it is dust or mould? What is the procedure for cleaning (if dust and if mould)? What is the cost? Is the damage permanent if its mould? Bit of a scary thing to occur.......

Nic
02/05/2006 04:53:54 AM · #2
With dSLR's you get Sensor dust. If the marks are there with all lenses, then that's what you have. You MUST get that professionally cleaned. Doing it yourself is almost universally counselled against.

Brett

Message edited by author 2006-02-05 04:54:16.
02/05/2006 05:25:21 AM · #3
Cleaning it yourself is common practice and easy to do with Visible Dust Sensor Brushes and wet methods like the Copperhill method. There is no need to get it professionally cleaned. If your hand is steady enough to get a wire trough a needle you can clean your own sensor.

The dust is on the sensor, not on the mirror. Do not touch the mirror.
See your manual on how to get the mirror up for sensor cleaning and search the forums for sensor cleaning discussion with all their links and advice.
02/22/2006 06:39:45 PM · #4
There's an option in the setup menu (last one to the right) of the *istDL for 'sensor cleaning'. You select this and the mirror flips up. To get it back down, you power off the camera.

Be careful.

Mark
02/22/2006 07:43:32 PM · #5
set it for "sensor cleaning" without a lens attached to the camera. Turn the camera body down so that the lens mount faces down toward the ground.
Get the largest hand bulb blower (Not erosol), blow like crazy.
Turn the camera off, put on a wide lens with high aperature, shoot a bright light/sky/wall. View the image in PS and "auto level" if there are any more dust on the sensor, that will show up. If that doesn't work consider a brush like artic butterfly or a cleaning sol. based product like the eclipse.
Good luck.
BTW, there is a piece of glass that sits on top of the sensor and that's what you are actually cleaning.
02/22/2006 07:54:04 PM · #6
Go to //www.pbase.com/copperhill/ccd_cleaning ... you will find some good advice. I have used the method, and it works just fine. Follow the instructions and you can't go wrong and you surely can use your money on something better than having someone else do it. And he also tells you why using a blower is a bad idea. At //www.warehouseexpress.com/ ... you find a little starter kit (on the left, digital/cleaning equipment/ccd cleaning) and you are ready to go. Read all the instructions even though it is a lot of text and some of it repeated, but there are some important pointers along the way.
Good luck.
02/22/2006 08:00:06 PM · #7
CopperHill, CopperHill, CopperHill....

For about 30 bucks my sensor is always clean. Depending on the "dust", I may clean several times a month....but only when needed.

It is not hard, just follow the instructions.

KS

Originally posted by manic35:

Hi all

Just have recently noticed some marks that appeared on some images when shot at narrow apertures and on further investigation realised that they appeared irrespective of the lens on the camera. I can only assume that they are inside the camera. My question is what is the most likely source of the problem? Will these marks be on the mirror? How do I know whether it is dust or mould? What is the procedure for cleaning (if dust and if mould)? What is the cost? Is the damage permanent if its mould? Bit of a scary thing to occur.......

Nic
02/22/2006 08:09:28 PM · #8
Originally posted by manic35:

...marks that appeared..at narrow apertures...irrespective of the lens on the camera...How do I know whether it is dust or mould? What is the procedure for cleaning (if dust and if mould)? What is the cost? Is the damage permanent if its mould?...


Mould is a serious thing. It can grow in lenses, particularly after years of use and in lenses which are well sealed (Canon L series). I've never heard of it occurring in cameras. It is very difficult and prohibitively expensive to have the mould removed.

Best to prevent it by handling and storing your lenses with this in mind.

Message edited by author 2006-02-22 20:09:54.
02/22/2006 08:37:07 PM · #9
I just ordered the Copperhill system last week. I am trying very hard to restrain myself from other method until it gets here. It's supposed to be here tomorrow. I need it really bad.....I see sensor dust on every shot that has the sky, or a solid light color.
02/22/2006 08:59:00 PM · #10
For those in the UK, this might be of interest...

//www.intemos.com/

Review of product:

//www.naturephotographers.net/imagecritique/bbs.cgi?a=vm&mr=2135&b=vf26&st=0&la=20&ph=0&sid=24987

Message edited by author 2006-02-22 20:59:45.
02/23/2006 04:34:28 AM · #11
Originally posted by GuGi:

Go to //www.pbase.com/copperhill/ccd_cleaning ... you will find some good advice. I have used the method, and it works just fine. Follow the instructions and you can't go wrong and you surely can use your money on something better than having someone else do it. And he also tells you why using a blower is a bad idea. At //www.warehouseexpress.com/ ... you find a little starter kit (on the left, digital/cleaning equipment/ccd cleaning) and you are ready to go. Read all the instructions even though it is a lot of text and some of it repeated, but there are some important pointers along the way.
Good luck.


Made the links clickable.
02/23/2006 07:47:21 AM · #12
You can also take it to a camera repair shop and they will clean it for a few bucks, if you aren't comfortable doing it yourself.
02/23/2006 08:01:52 AM · #13
I have also successfully used the Copperhill method. But be careful. I'm aware of at least one person on this site that had to send their camera in to get the sensor replaced.

02/23/2006 08:49:26 AM · #14
Originally posted by deapee:

You can also take it to a camera repair shop and they will clean it for a few bucks, if you aren't comfortable doing it yourself.


My local shop charges over $160! Luckily my camera broke so I got a nice clean replacement...one way around cleaning. :)
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