5D Stubbon Dust problem

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Archive 2008 · 5D Stubbon Dust problem

CVickery
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p.1 #1 · 5D Stubbon Dust problem

I'd like to ask some advice on how to deal with a stubborn dust speck on my 5D sensor. I've tried a blower, Arctic Butterfly, Visible Dust's wet cleaning system, SensorKlear and a SpeckGrabber and this speck isn't moving

This speck is in the upper left corner so it shows up on virtually every outdoor landscape shot...there's almost always blue sky there. Has anyone had a problem like this and how did you fix it? Oh, and don't say send it to Canon...this speck ended up there while Canon was "cleaning" the sensor, and they've tried twice now and haven't got it off.

Sep 17, 2008 at 02:19 AM

madmax200
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p.1 #2 · 5D Stubbon Dust problem

I had one like that. I used pecpads and methanol 6-7x before it budged. Its in the opposite corner by the way.

Sep 17, 2008 at 02:21 AM

CVickery
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p.1 #3 · 5D Stubbon Dust problem

Yeah, I know where it is

I even bought a Sensor Loupe so I could see the sucker. I've gone through about 5-6 sensor swabs and need to get some more. I guess the wet method has the best chance of success. I have some Eclipse here as well, but hesitated using it since I heard there was some issue with it and the 5D.

Sep 17, 2008 at 02:28 AM

mttran
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p.1 #4 · 5D Stubbon Dust problem

I had one and finaly removed it with pacpec and Eclipe last night.

Sep 17, 2008 at 03:51 AM

Gary Petersen
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p.1 #5 · 5D Stubbon Dust problem

Last time I got one of those I used a plastic (they're flexible) q-tip and eclipse then just scrubbed the hell out of it.

Sep 17, 2008 at 04:02 AM

dcains
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p.1 #6 · 5D Stubbon Dust problem

LensPen?

Sep 17, 2008 at 04:34 AM

mdbassman
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p.1 #7 · 5D Stubbon Dust problem

My 5D is a bear to clean! It takes me at least an hour and 3-5 Copperhill PecPads and E2 solution ( used the normal solution with no problems at all but switched just for piece of mind) at minimum!!! Just keep trying and don't use too much pressure rubbing.
Dan

Sep 17, 2008 at 10:57 AM

CVickery
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p.1 #8 · 5D Stubbon Dust problem

Thanks guys.

Sep 17, 2008 at 01:02 PM

krementz
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p.1 #9 · 5D Stubbon Dust problem

Are you sure it is the sensor? I chased a spot on my sensor without success, and found it was on the rear element of my lens. Yes, I felt stupid....

Sep 17, 2008 at 03:04 PM

Roland W
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p.1 #10 · 5D Stubbon Dust problem

It is optically impossible for anything on the rear of your lens to image as a spot and show up in an exposure like sensor dust does. The surface of the rear element is totally out of focus, and things at that location just cause loss of contrast and loss of brightness. You likely had "lucky timing" that caused you to think it was your lens, but it could not have been.

Sep 17, 2008 at 06:52 PM

pjbishop
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p.1 #11 · 5D Stubbon Dust problem

I just cleaned the front and rear glass on the lenses I'm using, did get rid of a few specks, but there's a nice big one remaining that shows up on the exposure. No matter how careful you are changing lenses, the 5D sucks in dirt, and I really stink at cleaning it.

Sep 17, 2008 at 11:09 PM

Cliftonyte
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p.1 #12 · 5D Stubbon Dust problem

when I get my 5D back from canon I am leaving my 24-70 on it and never taking in off.
fricking dust bunnies

Sep 18, 2008 at 02:53 AM

AlexTokyo
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p.1 #13 · 5D Stubbon Dust problem

If you have a friend in Tokyo (or at a Canon Service center), the kit from Canon works well. I got mine from the Shinjuku Service Center, it cost about $50 if I remember well.

More here:
http://www.flickr.com/photos/obskura/2578720805/

Also, be careful with Eclipse. For some reason, I had one bottle that messed completely things up and just added dust as I was trying to clean. Horrible story ...

Sep 18, 2008 at 05:48 AM

Ariel Bravy
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p.1 #14 · 5D Stubbon Dust problem

I've got one of those on my 1D too and no amount of lenspen action or copperhill/eclipse scrubbing is taking it off.

Sep 18, 2008 at 05:53 AM

CVickery
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p.1 #15 · 5D Stubbon Dust problem

Four more passes with Eclipse and no movement

That kit from Canon looks interesting, it's like a full size version of the SpeckGrabber. Too bad it's not readily available.

This is almost enough to drive me to buy the 5DMkII

Sep 18, 2008 at 01:58 PM

krementz
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p.1 #16 · 5D Stubbon Dust problem

Roland W wrote:
It is optically impossible for anything on the rear of your lens to image as a spot and show up in an exposure like sensor dust does. The surface of the rear element is totally out of focus, and things at that location just cause loss of contrast and loss of brightness. You likely had "lucky timing" that caused you to think it was your lens, but it could not have been.

NO, I found the dust on the rear element, and it was unequivocally the cause the the problem. Try putting something on your rear lens before saying it is "impossible". I realized it when I tested f22 with different lenses, with the dust spot "coming and going".

It does not show up as sharp as dust does at f22. It showed as a blurry spot, like dust does at f11.

Sep 18, 2008 at 02:20 PM

zipunow
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p.1 #17 · 5D Stubbon Dust problem

I use Arctic Butterfly 724. It seems to get rid of most dust. But I notice that the mirror and viewfinder also have dust. Now what am I to do .. spend more $$$..

Sep 24, 2008 at 12:35 AM

Imagemaster
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p.1 #18 · 5D Stubbon Dust problem

madmax200 wrote:
Its in the opposite corner by the way.

Please explain what you call the opposite corner.

If the smudge is in the upper left corner when viewed on the image, on the sensor it is on the lower left corner if you could view the sensor from behind, which places it on the lower right corner when viewing the sensor from the front.

The lens inverts an image, but does not reverse it horizontally.

Sep 24, 2008 at 05:54 AM

Nickle S.
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p.1 #19 · 5D Stubbon Dust problem

Imagemaster wrote:
madmax200 wrote:
Its in the opposite corner by the way.
Please explain what you call the opposite corner.
If the smudge is in the upper left corner when viewed on the image, on the sensor it is on the lower left corner if you could view the sensor from behind, which places it on the lower right corner when viewing the sensor from the front.
The lens inverts an image, but does not reverse it horizontally.

Imagemaster,

If the mark is in the upper left corner of the image, the speck is actually sitting in the lower left of the sensor as you look into the chamber. Forget about the sensor's position from the shooting position, it's just one vertical flip as you look head-on at the sensor. And a good wet cleaning system can be used on the mirror with no problem as long as you're gentle with the pressure.

Nicholas
www.copperhillimages.com

Sep 24, 2008 at 11:35 AM

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