Dust on the sensor that can't be clean away

[HKFEVER]

I tried at least 5 hrs with Copperhillimages sensor clean kit, but just can't clean away 3 little dots at the upper right corner of the picture (the lower right corner of the sensor).

Try change different lens to see whether those dots are casuse by the len.
Try so many different way to clean the sensor, but with no success.

Will those three dots are lay between the low pass filter and the sensor?

Any suggestion?:(

[robertwgross]

I tried at least 5 hrs with Copperhillimages sensor clean kit, but just can't clean away 3 little dots at the upper right corner of the picture (the lower right corner of the sensor).

I think you are looking at this all wrong, literally.

If you have three dots in the upper right corner of the picture, then they probably come from three dust spots in the lower LEFT corner of the sensor.

Further, if it takes more than about 15 seconds to clean, then you are going at it all wrong.

---Bob Gross---

[kawter2]

I have seen this "gummy" pen that got a speck off of my sensor, but I cant find it right now. Can you see the dots on the sensor itself or only in the images?

[HKFEVER]

I have success to clean all the dots on the sensor with couple test run, but just no luck with those three.

I will try the lower left corner now.

:oops:

[HKFEVER]

I have seen this "gummy" pen that got a speck off of my sensor, but I cant find it right now. Can you see the dots on the sensor itself or only in the images?
Can't see on the sensor, only on the monitor.

[HKFEVER]

Tried on all four corner, just can't move those dots.


Help.:cry:

[kawter2]

can you post a sample 100% crop?

[HKFEVER]

How to post the insert in this forums?

[HKFEVER]

can you post a sample 100% crop?The dots is only a very small tiny tiny dots only show up at f/22. Please check with this link for the 100% corp at the very upper right corner of the picture.

http://www.pbase.com/hkfever/image/38655769

Any way to get rid of those?

Are they between the low pass filter and the sensor?

[baldermort]

I used to have lots of problems with dust on the sensor of my 1D-Mark-II. Some of the dots were visible at F16, but if you stop the lens down to F22/F32 then everything gets horrible and black and very visible.
I tried to blow these away with canned air, but this left some form of deposit on the sensor that looked like a rainbow smudge or oil slick when you get down to F16.
So then I looked on the net to try to find everything that I could about cleaning the sensor.
The best articles and the best solution come from the nice people at "Visible Dust", which you can find here. http://www.visibledust.com/index.htm
Their sensor clean managed to get rid of all of the rainbow effects on my sensor, but this still left behind some nasty specks of dust that did not want to go away.
The Sensor Brush soon dealt with them. Spray the brush with air to charge it up, wipe the sensor, spray the brush to clean it and recharge it with posative ions and wipe again. Then test the camera to see if there is anything left. AMAZING! everything is gone.
I now check once per week to see if anything has come back. I need to clean my sensor about once every 10 days, but this is normally done with two swipes of the brush.

They are expensive, they do not yet have a dealer in Europe, it takes forever to ship, until you actually use it, you are unconvinced that it will work. The effects speak for themselves. It works.
I tried just about everything else that I could find, but nothing comes close.

Hope this helps, happy shooting.

[ssim]

I had this problem with th 10D when I first got it. I finally resorted to takin the camera into Canon. They did the cleaning on the spot and I had it back in about 10 mintues.

[HKFEVER]

Those tiny tiny 3 dots don't change any position at all. Even I try more force to clean it will Copperhillimage swab.

Just wonder will they behind the low pass filter.

I will call Canon in Monday to see what can they do.:cry:

[Nicholas R.]

HK,

There are only two ways that dust can get between the filter and the CMOS; if the camera came to you like that, or if you've used powerful vacuums or blowers. One way to check this is to look at your first shots with this camera and to possibly see if the spots were there from the beginning. Looking at your image, I'd say they are probably just very, very stuck particles. BTW, have you made sure that your lens is perfectly clean, front and rear?

Now, about your approach to this problem. Please don't take offense, but, if you were actually swabbing your CMOS for 5 hours, I think that was very poor judgement. Your actions here lead me to believe you're missing a very basic understanding of sensor swabbing, one that is required to have success in removing dust. However, this very well may be a case of not laying the 'Swipe down flush on the sensor; you may have been putting pressure down on one corner only. And it may also be very possible that these specks were there from day 1, between the sensor and the filter. If you kept increasing the pressure with no success, you should have called it quits after maybe 5 to 10 swabbings, MAX. You really put your camera/sensor in jeopardy by going beyond that. This has nothing to do with being technically adept, it's just a matter of basic common sense. Also, if I just got a cleaning kit that included Eclipse and tried to wipe a filter with it and saw this blue residue, there is NO WAY I would let it get near one of my high-dollar lenses. I don't understand what you were thinking here. Do you think this was good judgement?

My suggestion for you is this: you should go out and shoot today and tomorrow like there was nothing amiss, then recheck your dust situation tomorrow night. If the spots are still there, do just 2 or 3 more swabbings to see what happens, and then, if they are still present, send the camera in for servicing the first thing Monday morning (this is the exact advice I give in my tutorial). Do not swab any more at this point. In the future, you may want to take the above advice and look into a more innocuous method of removing dust which may be easier for you to handle, but which will also have NO EFFECT on the super-stuck dust-bunnies you've encountered here.

Nicholas
http://www.pbase.com/copperhill/ccd_cleaning

[HKFEVER]

Thank you for the advise:

- I did not use any compress air to blow, just regualr rubber blower.

- I can't check my previous pictures, because I seldom use f/22 to shot picture, + those dust is no way to see at f/5.6 of below.

- The first couple hrs. is not exactly every mins. Actually, most of thime is checking and checking on the monitor + cmos to see what is going on.

- I tried the Edlipse on couple Canon protect filters first to see whether there will have blue residue (those Canon filters are brand new, never been clean by other solution first). And it is all OK without any residue.

- I found out those blue residue may be cause by the previous lens cleaning with Kodak' len clean solution react with Eclipse.

- Finally, I found a very good swabbing direction to clean all all the dust.

- But those three tinny tinny one on the upper righht corner of the picture (lower left corner on the cmos) remain the same location, shape, colour what so ever.

- So I will call Canon and see what they say.

[HKFEVER]

It is getting worst from my 300D, D70, 1DMKII and now 1DsMKII.

I can't recall I have to deal with dust with my previous 300D & D70.

I hate dust, after all the cleaning, all the dust is gone from the first couple shots.

:evil: Guess what. I didn't change any len, and after couple hrs and 20+ shots I find five tiny dots at the lower right corner of the picture.

Previously the lab will take care the dust during develope the film.

But now, all depends on the camera and the owner.:evil: