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Subject: "Sensor dust so soon!" Previous topic | Next topic
jadiniz Registered since 25th Dec 2010Thu 13-Jan-11 02:32 PM
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"Sensor dust so soon!"


Estoril, PT
          

I've only been playing with the new D7000 for some three weeks now, and that's about as many times as I've switched lenses, always at home, body pointing down, nice and easy.

Alas, yesterday I took some pictures including clear sky and small apertures, and I've already got sensor dust. No doubt about it, I did the test of shooting a long exposure against a white wall, infinity focus, moving the camera, f32. One large speck, several small ones. All go unnoticed in the large aperture pictures.

Geez, does it pay to be this carefull? Should I get a blower? I'm really not brave enough to start doing wet/dry pads so soon with a new camera.

Also, and this puzzles me, when I command a sensor clean, the display shows the in progress message. However, I've also got it configured for clean at start-up and shutdown, and on these occasions no message comes up, unlike with my old D3000. Is this normal?

Thanks for any help.

Best regards from Portugal.

http://egozarolho.blogspot.com
1. Good content, good aesthetics and good tecnique. On that order.
2. Light is more important than glass and pixels.
3. In the digital photography process, software is as important as gear.

  

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beemerman2k Silver Member
13th Jan 2011
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beemerman2k Silver Member Nikonian since 27th Mar 2006Thu 13-Jan-11 03:05 PM
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#1. "RE: Sensor dust so soon!"
In response to Reply # 0


Ellington, US
          

I just signed on to report I, too, have sensor dust so soon in the life of my D7K. Here in Connecticut, we got buried in snow and I went out to take some pictures. Had a blast, though it might have been irresponsible of me to take a new camera out into the cold heavy downpour of snow. The camera got pretty wet and all the internals fogged up really well when I finally went back indoors.

Nonetheless, I also discovered, when looking at the images, that I have some pretty blatant dust on my sensor as well. In fact, I locked up the mirror and looked at the sensor under a light and I can see particles on it with the naked eye. Having the camera clean the sensor does no good at all. I used my Giotto blower and that did no good as well. I looked at images taken from a couple of weeks back and it's clear the blemishes weren't on the sensor at that time, so I know they have been put on since then.

So I am going to get a sensor cleaning kit. I will test it out first on my Nikon D70s, which strangely enough, after all these years has a cleaner sensor than the D7K does at this point in time, and I've never ever cleaned that sensor beyond blowing it with the Giotto blower.

Can anyone recommend a good sensor cleaning kit?

Beemerman2k
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km6xz Moderator Awarded for his in-depth knowledge in various areas, including Portraits and Urban Photography Nikonian since 22nd Jan 2009Thu 13-Jan-11 04:27 PM
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#3. "RE: Sensor dust so soon!"
In response to Reply # 1


St Petersburg, RU
          

If there was any loose dust before it developed the condensation, the blower probably would have handled it but any moisture will result in the dirt sticking to the exposed surface. Look as the ring left by putting a glass on a table and the condensate on the outside of the class dries leaving a ring. There is a lot of dirt in the air and if it does that to furniture, it can do it to a surface that needs to be pristine. Wet cleaning will no doubt work for condensation residue.

A lot of things can increase the likelihood of dirt on a sensor; the design of the lens...does it pump air when zooming? Changing lenses even in clean environments, and how often. moisture/condensation as you found out. The condition of the seal, if there is one, on the lens/mount. It all normal and comes with the ownership of a camera....any camera


Stan
St Petersburg Russia

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beemerman2k Silver Member Nikonian since 27th Mar 2006Thu 13-Jan-11 04:53 PM
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#4. "RE: Sensor dust so soon!"
In response to Reply # 3


Ellington, US
          

Stan, I'm not implying that there's anything wrong with the D7000 simply because I already have accumulated dust on the sensor. I think your analysis is spot on. Heading out into the cold like I did with all manner of snow falling -- and yes, I did notice the area around the lens mount was wet as well -- and then returning indoors to a nice warm interior no doubt caused condensation and the problems I see now. Those spots were not there in my earlier pictures, so obviously my actions yesterday are what made the dust so evident.

OK, so I need a "wet cleaner". There seem to be several brands out there. Anyone have any experience with any of them?

Like I said, my D70s will be the test subject before I move on to the D7K.

Beemerman2k
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agitater Gold Member Nikonian since 18th Jan 2007Thu 13-Jan-11 11:48 PM
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#13. "RE: Sensor dust so soon!"
In response to Reply # 1


Toronto, CA
          

Here's a recent sensor cleaning thread:

http://www.nikonians.org/forums/dcboard.php?az=set_threaded_mode&forum=226&topic_id=28060&prev_page=show_topic&gid=28060#28069

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Robman3 Gold Member Nikonian since 12th Apr 2010Wed 16-Feb-11 06:15 AM
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#28. "RE: Sensor dust so soon!"
In response to Reply # 13


West of Santa Monica, US
          

Thanks, easier then restating all things wet.

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sunndance Registered since 17th Mar 2009Mon 17-Jan-11 07:17 PM
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#22. "RE: Sensor dust so soon!"
In response to Reply # 1


Texarkana, US
          

A charged sensor is a 'dust magnet' (static electricity). Small apertures will always show more dust. "Always turn camera power off before removing lens" someone in this forum told me (best advise i was ever given) This has helped reduce my sensor dust to nada. I only use a blower to blow air across the body opening @ 90 degress to create a vaccumn. Never into the body. D70 infrared, D90 x 2, D300s, D700, 5dmkII & a brand new D7000, all with little to no dust since i started this practice...

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intrepidnz Registered since 18th Nov 2004Thu 13-Jan-11 04:16 PM
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#2. "RE: Sensor dust so soon!"
In response to Reply # 0


NZ
          

Maybe check to see if you have dust on the sensor or the back element of the lens.

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jadiniz Registered since 25th Dec 2010Thu 13-Jan-11 05:08 PM
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#5. "RE: Sensor dust so soon!"
In response to Reply # 2


Estoril, PT
          

Whishfull thinking. Back of lenses is clean, tested different ones with same results.

http://egozarolho.blogspot.com
1. Good content, good aesthetics and good tecnique. On that order.
2. Light is more important than glass and pixels.
3. In the digital photography process, software is as important as gear.

  

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gkaiseril Gold Member Nikonian since 28th Oct 2005Thu 13-Jan-11 05:53 PM
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#6. "RE: Sensor dust so soon!"
In response to Reply # 5
Thu 13-Jan-11 05:54 PM by gkaiseril

Chicago, US
          

As noted in the Nikon manuals, first try a blower. If it still persist, then a wet cleaning is in order. You can either pay for this service or preform it yourself.

Dust was even present in film SLRs, but since the recording media changed with every exposure, it was not as big as problem. Also the film did have electric charge being applied to it, but could have a static electric charge built up, but this could disipate through the metal cassette and camera body. The cassette also wiped the film as it was rolled and unrolled.

George
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billD80 Silver Member Nikonian since 22nd Jan 2007Thu 13-Jan-11 10:07 PM
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#7. "RE: Sensor dust so soon!"
In response to Reply # 6


US
          

Is this really an issue? I'm going to assume my D7000 has dust on the sensor... So what. Is this something noticed in actual images, or from blank wall/blue sky shots at f/22?

I hardly ever shoot at f/22, and frankly, with the results I've gotten so far, (totally blue sky with bright white snow) if there is dust, I'd just assume leave it on.

I can't imagine physically touching the sensor, unless there was some dire need to do so.

www.billkeane.zenfolio.com

  

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jadiniz Registered since 25th Dec 2010Thu 13-Jan-11 11:09 PM
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#8. "RE: Sensor dust so soon!"
In response to Reply # 7


Estoril, PT
          

Although I generally agree with your post, and rarely shoot at small apertures, it may become an issue for two reasons alone:

1. It does tends to show up more in HDR pics and long DOF landscapes (lots of sky);
2. My fear is that I'm doing something wrong, and that being the case the problem will continue to escalate.

I didn't get a DSLR and three different objectives to become worried when swapping lenses. But truth is I give it a second thought when that time comes. I know, yes, I'm being a bit too picky here... Please bear with this newbie's insecurities here

http://egozarolho.blogspot.com
1. Good content, good aesthetics and good tecnique. On that order.
2. Light is more important than glass and pixels.
3. In the digital photography process, software is as important as gear.

  

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beemerman2k Silver Member Nikonian since 27th Mar 2006Thu 13-Jan-11 11:18 PM
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#9. "RE: Sensor dust so soon!"
In response to Reply # 8


Ellington, US
          

My feeling is this: if I am going to rise to my potential as a photographer, then I need to master my equipment. Therefore, I must learn how to clean my sensor. Once I learn this, I am free from worry and I can explore my craft without fear of my sensor getting dirty.

What if I ruin my sensor? I pray that does not happen, but if it does, then I am inconvenienced. But I will not let fear contain my enthusiasm for this skill.

Time for me to learn how to clean my sensor!

Beemerman2k
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Nikon N70 w/ SB28

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beemerman2k Silver Member Nikonian since 27th Mar 2006Thu 13-Jan-11 11:29 PM
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#10. "RE: Sensor dust so soon!"
In response to Reply # 9


Ellington, US
          

Just came across this thread on cleaning Nikon sensors on DPReview.com.

This is the Internet, so everything must be scrutinzed before it is accepted, but I found this interesting nonetheless.

http://forums.dpreview.com/forums/read.asp?forum=1034&message=30918712

Beemerman2k
2000 BMW R1100RT Motorcycle
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Nikon D70s w/ SB600
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billD80 Silver Member Nikonian since 22nd Jan 2007Thu 13-Jan-11 11:44 PM
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#12. "RE: Sensor dust so soon!"
In response to Reply # 9


US
          

>My feeling is this: if I am going to rise to my potential as
>a photographer, then I need to master my equipment.
>Therefore, I must learn how to clean my sensor. Once I learn
>this, I am free from worry and I can explore my craft without
>fear of my sensor getting dirty.
>
>What if I ruin my sensor? I pray that does not happen, but if
>it does, then I am inconvenienced. But I will not let fear
>contain my enthusiasm for this skill.
>
>Time for me to learn how to clean my sensor!

With respect, I can't disagree more...

Your potential as a photographer has nothing to do with cleaning the sensor. It has to do with seeing and capturing light.

I can't speak to your worry, but fear of the sensor getting dirty is groundless, unless you deliberately use techniques (or are working in some extreme conditions) that grossly introduce dirt beyond the mirror chamber.

If ruining your sensor is a mere inconvenience, then having it professionally cleaned by Nikon every two or three years shouldn't be an issue.

Let's talk about the internet post you referenced in another post... "Things finally came to a head after I started doing very long exposure photography which sometimes involved stopping the aperture down to very small fstops (the f22 end) where dust becomes very visible if your cameras sensor is dirty."

Yes, f/22... On a D7000 you don't want to be shooting below f/9 - f/11 too often, unless you want diffraction to set in. THAT will affect your images on a perfect sensor WAY more than a dust spot at f/22 on a "dirty" one.

Personally, I've seen many more posts regarding scratched/smudged sensors due to botched cleaning (that the poster didn't notice till they took shots at f/22 of blue skies).

In some ways, this is similar to high precision telescope optics... The less you clean them, the more valuable they are. Why? Because the dust never affects the image quality, but scratches can, and do.

www.billkeane.zenfolio.com

  

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billD80 Silver Member Nikonian since 22nd Jan 2007Thu 13-Jan-11 11:31 PM
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#11. "RE: Sensor dust so soon!"
In response to Reply # 8


US
          

I know, yes, I'm being a bit too
>picky here... Please bear with this newbie's insecurities here
>


yes, you are being too picky. Relax. Sensors coming straight from factory cleanings will also show dust. I do HDR all the time. Dust has never been an issue.

I've NEVER lost or had to manipulate ANY image because of dust. NEVER. It's just not that big a deal.

I use a blower on the back of a lens I'm about to mount. I don't waste too much time in placing it on the camera, but that's it.

I've seen pros a whole lot less careful than me, and they never have to "fix" images because of dust.

www.billkeane.zenfolio.com

  

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ericbowles Moderator Awarded for his in-depth knowledge and high level skills in various areas, especially Landscape and Wildlife Photoghraphy Nikonian since 25th Nov 2005Thu 20-Jan-11 11:48 AM
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#23. "RE: Sensor dust so soon!"
In response to Reply # 11


Atlanta, US
          

I don't worry too much about dust, but I do try to keep things clean.

Removing a lens in humid or dusty conditions can be a problem and commands extra care. Coming in from the cold nto a warm house or vehicle requires care.

I remove almost all dust with a blower. I let the camera clean on start up and shut down. And every now and then I have a stubborn dust spot that requires a real cleaning. I typically take it to a Nikon Authorized Repair center for those stubborn dust spots - but the frequency is about once every 18-24 months or over 50,000 images and 250 days of shooting.

Dust spots are an issue for me. One of my edit steps is to inspect my images for dust - often at 100%. Blue skies and smooth areas have to be dust free. A single dust spot will disqualify an image from most photo competitions and commercial use, so it must be fixed. I have lost images due to a dust spot. While you can usually clone away a dust spot, sometimes it is in an area of detail that is hard if not impossible to fix.

Eric Bowles
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gkaiseril Gold Member Nikonian since 28th Oct 2005Fri 14-Jan-11 02:56 PM
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#14. "RE: Sensor dust so soon!"
In response to Reply # 0


Chicago, US
          

Moose Peterson cleans his lens mounting flanges on the camera body and lens. It appears one of the sources for 'dust' is the oxide build up on the mounting faces. Also pollen or small hairs can be blower into the camera body, and when the sensor is powered up with DC current, then an electric charge can build up on the surface of the sensor's cover filters. This charge will attract small particles. A regular cleaning will reduce the effects of these artifacts.

Many Post Processing products have a dust removal tool or clone tool that can remove the visible dust.

Condensation is a different animal.

Unless you crop of have large dust particles, most will not be noticed.

George
My Nikonian Galleries

  

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beemerman2k Silver Member Nikonian since 27th Mar 2006Sat 15-Jan-11 02:23 AM
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#15. "RE: Sensor dust so soon!"
In response to Reply # 14
Sat 15-Jan-11 02:53 AM by beemerman2k

Ellington, US
          

OK, so I've been very busy, but there's nothing like posting some pictures to drive the point home.

On Wednesday, Jan 12th, we suffered a huge snow storm here in Connecticut. Pretty much all of the eastern portion of the United States was snowed on with this storm. So, I grabbed the D7000 and headed out into the blizzard for some fun shots.

Here I am walking across my front lawn. The snow is literally up to my knees and therefore walking is very difficult:


Here's an idea of just how heavy the snow storm really was:
(1/13 sec, F/14, ISO 100)


The snow was falling fast and furious. Here's a passerby who had his own ideas as to how to enjoy the weather (and yes, the snow was falling that heavily!):
(1/13 sec, F/13, ISO 100)


Think maybe some humidity built up inside my camera when I came inside?
(1/100 sec, F/8, ISO 400)


So here's what my sensor looks like now:
(1/15 sec, F/32, ISO 800)


At any aperture smaller than F13 (higher F stop number) the spots are visible in the picture. Yuck, look at that terrible blotch!
(1/10 sec, F/16, ISO 100)


OK, so now do you see why I cannot let this stand? In the majority of the cases, no problem as I am not likely taking pictures at those apertures. But let me go out in the snow again, or go to a snowy mountain to photograph some skiers, or go to the beach, or photograph some aircraft at a show...

Now this is curious. I took this picture the morning after the snow storm (yesterday), yet there are none of the ultra-obvious blemishes from the sensor:
(1/50 sec, F/14, ISO 100)


Strange...

Beemerman2k
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billD80 Silver Member Nikonian since 22nd Jan 2007Sat 15-Jan-11 01:26 PM
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#16. "RE: Sensor dust so soon!"
In response to Reply # 15


US
          

>Now this is curious. I took this picture the morning after the
>snow storm (yesterday), yet there are none of the
>ultra-obvious blemishes from the sensor:
>(1/50 sec, F/14, ISO 100)
>Strange...


No, not strange. Just f/14... instead of f/16. Chances are if you shoot at f32, they'll all magically reappear.

Why are you shooting smaller apertures than f/9? Diffraction sets in past f/8-f/9 and your lens won't be performing at its best.

www.billkeane.zenfolio.com

  

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beemerman2k Silver Member Nikonian since 27th Mar 2006Sat 15-Jan-11 02:07 PM
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#17. "RE: Sensor dust so soon!"
In response to Reply # 16


Ellington, US
          

>
>Why are you shooting smaller apertures than f/9? Diffraction
>sets in past f/8-f/9 and your lens won't be performing at its
>best.

Because I wanted a slower shutter speed to capture the snow in streaks. I'm already at ISO 100, yet at F8, my shutter probably would have been too fast to *blur* the snowfall, to emphasis their presence as opposed to just white dots peppered in the picture. My selecting a smaller aperture opening, this was my hope.

The other reason is that I am still learning and experimenting with these concepts

Beemerman2k
2000 BMW R1100RT Motorcycle
Nikon D7100
Nikon D70s w/ SB600
Nikon N70 w/ SB28

Visit
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billD80 Silver Member Nikonian since 22nd Jan 2007Sat 15-Jan-11 04:08 PM
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#18. "RE: Sensor dust so soon!"
In response to Reply # 17


US
          

>Because I wanted a slower shutter speed to capture the snow in
>streaks. I'm already at ISO 100, yet at F8, my shutter
>probably would have been too fast to *blur* the snowfall, to
>emphasis their presence as opposed to just white dots peppered
>in the picture. My selecting a smaller aperture opening, this
>was my hope.
>
>The other reason is that I am still learning and experimenting
>with these concepts


We're all still on a the learning curve.

But, in general, smaller stops than f/8 cut into the lens' resolution (because of diffraction), and apertures past f/16 are when dust really gets noticeable.

As a test, try shooting the blue sky at f5.6 or f/8... See if the dust is as visible.

Another tool that may come in handy is the Giotto Rocket-Blaster. You use it to "blast" the sensor with filtered air, while the mirror is in the mirror-up position (it's in the menu), without actually touching the sensor.

NEVER use canned compressed air for this because sometimes it "spits" out liquid that will make sensor cleaning a dead certain necessity.

Personally, I take care where I change lenses (not on carpet), and I make changes very quick. I also "rocket-blast" the rear element, and place it on it's rear cap for quick install on the camera body.

www.billkeane.zenfolio.com

  

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dm1dave Administrator Awarded for high level knowledge and skills in various areas, most notably in Wildlife and Landscape Nikonian since 12th Sep 2006Sat 15-Jan-11 04:46 PM
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#19. "RE: Sensor dust so soon!"
In response to Reply # 18
Sat 15-Jan-11 05:33 PM by dm1dave

Lowden, US
          

“We're all still on a the learning curve.”

“in general, smaller stops than f/8 cut into the lens' resolution (because of diffraction),…”

Sometimes there are things that are more important then obtaining the ultimate resolution. A macro shooter often use very small apertures (f/22 – f/45) in order to get adequate depth of field others use small apertures to slow their shutter speed for creative reasons as James pointed out above in post #17.

Like you I seldom shoot with small apertures so dust is seldom an issue BUT I still clean my sensor about twice a year. I agree with James statement in post #9 that maintaining and cleaning your tools is an integral part of the craft of photography.

Wet cleaning is quite easy and not as risky as it may seem. In all of my years at Nikonians I have seen only one example of someone damaging their camera wile doing a wet clean. The biggest risk is making the sensor dirtier then when you started but that just requires another cleaning.

Remember that although we refer to this as sensor cleaning you can never actually touch the cameras sensor. What you are cleaning is the filters mounted on top of the sensor. This filter is made of a very hard glass.

I would recommend that any digital camera should have the sensor cleaned at least once a year. If you are not comfortable doing it yourself take the camera in to have it done professionally.

Of course if you are not worried about dust and it never affects your images then it is your choice weather to clean or not clean the sensor. Just don’t tell others how they should shoot or that they should not risk sensor cleaning just because you do not clean your sensor.

Dave Summers
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Sunway Registered since 28th Jan 2010Sat 15-Jan-11 05:22 PM
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#20. "RE: Sensor dust so soon!"
In response to Reply # 17


London, GB
          

As much as I avoid routine cleaning of optical surfaces of any kind of instruments I use – not to mention the sensor filter – there comes the time when I do - with caution and all skill I have. I’d get this cleaned. F11-16 is perfectly usable aperture on d7000 depending on glass used – and regularly necessary in a row of tasks.
The dirt appears to have made contact stuck onto surface, wet cleaning is in order.
Needless to say, prevention better than cure.

Best,

Hynek

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billD80 Silver Member Nikonian since 22nd Jan 2007Sat 15-Jan-11 06:46 PM
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#21. "RE: Sensor dust so soon!"
In response to Reply # 20


US
          

>The dirt appears to have made contact stuck onto surface, wet
>cleaning is in order.

Could very well be.

When I've cleaned my sensor (filter) the Giotto Rocket-Blaster has actually done a remarkable job. Regarding a device that physically touches the surface to remove more stubborn dust specks, the "Speckgrabber" by Kinetronics works extremely well... It's a "dry" approach where individual specks are lightly touched and simply lifted off.

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PAStime Silver Member Nikonian since 10th Feb 2009Fri 21-Jan-11 02:19 AM
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#24. "RE: Sensor dust so soon!"
In response to Reply # 14


Kingston, CA
          

>Moose Peterson cleans his lens mounting flanges on the camera

Moose shoots great shots. But I watched his videos on cleaning and didn't like his technique. He seems to often wipe first, then blow with a blower. I've always done it the opposite way as the theory is that if you wipe and there is something like a single grain of sand on the lens, a nice scratch of other damage can result. So air blow first, wipe second, and keep an open mind on Moose's videos on cleaning.

Peter

  

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skibbyshot Silver Member Nikonian since 25th Apr 2006Mon 24-Jan-11 04:14 PM
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#25. "RE: Sensor dust so soon!"
In response to Reply # 24


Little Falls, US
          

Beemerman - "I just signed on to report I, too, have sensor dust so soon in the life of my D7K. Here in Connecticut, we got buried in snow and I went out to take some pictures. Had a blast, though it might have been irresponsible of me to take a new camera out into the cold heavy downpour of snow. The camera got pretty wet and all the internals fogged up really well when I finally went back indoors."

FYI - in the future, whenever bringing a cold camera/lens back into a warm area (house, vehicle, etc), place tehm into a palstic bag first, then seal it well. All the condensation will form on the outside of the bag. Keep the items in the bag until they sufficiently warm and yoiu should be good to go. This will help prevent any condensation not just on the outside, but also inside the camera.

I have dust issues with my D200's and now I'll avoid using f22 - f32 and use f11 & f16 mostly which has helped reduce the visibility of the buggers and usually providing a decent DOF.

Good luck....

KEN

  

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beemerman2k Silver Member Nikonian since 27th Mar 2006Mon 24-Jan-11 04:26 PM
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#26. "RE: Sensor dust so soon!"
In response to Reply # 25


Ellington, US
          

>
>FYI - in the future, whenever bringing a cold camera/lens back
>into a warm area (house, vehicle, etc), place tehm into a
>palstic bag first, then seal it well. All the condensation
>will form on the outside of the bag. Keep the items in the
>bag until they sufficiently warm and yoiu should be good to
>go. This will help prevent any condensation not just on the
>outside, but also inside the camera.
>

Nice idea. Thanks.

Beemerman2k
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thibaug Registered since 12th Feb 2011Wed 16-Feb-11 04:53 AM
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#27. "RE: Sensor dust so soon!"
In response to Reply # 26


CA_AB
          

Is there anything about the D7000 that would it make it somehow more likely to attract dust? I've had a D70 since it first came out and I've never had to clean it and it's still virtually dust free. I have been cleaning the D7000 about once a month and it's always covered in dust that won't blow or brush away. I'm not planning to keep doing that unless it gets to be more of a problem, but it seems strange...

  

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beemerman2k Silver Member Nikonian since 27th Mar 2006Wed 16-Feb-11 04:14 PM
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#30. "RE: Sensor dust so soon!"
In response to Reply # 27


Ellington, US
          

That's the question for sure. My D70s never attracted dust as well and in the 4+ years I owned it, I never felt compelled to want to clean the sensor.

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billD80 Silver Member Nikonian since 22nd Jan 2007Wed 16-Feb-11 04:36 PM
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#31. "RE: Sensor dust so soon!"
In response to Reply # 30


US
          

>That's the question for sure. My D70s never attracted dust
>as well and in the 4+ years I owned it, I never felt compelled
>to want to clean the sensor.

I wonder if the D70's comparative lack of resolution helped hide what the D7000 now shows? Or maybe it's winter, for many of us, and dry conditions make static electricity an issue...

Regardless, if printing at sizes like 10x15; 12x18, it'd be interesting if the dust now in question would be visible.

I'm printing, exhibiting and selling at 20x30. I'm going to assume my D7000 sensor is no less prone to anything than anyone else's. Even so, I haven't had visible reason to check, let alone clean, my sensor.

One caveat... I'm talking about images with wide expanse of blue sky, BUT they are all shot at f/8 or wider...

Maybe later, if I have time, I'll shoot the sky at f/32 and see what happens.

www.billkeane.zenfolio.com

  

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Robman3 Gold Member Nikonian since 12th Apr 2010Wed 16-Feb-11 06:42 AM
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#29. "RE: Sensor dust so soon!"
In response to Reply # 0


West of Santa Monica, US
          

Hello Porto,

Cleaning sensors can be a manicially frustrating excursion. Proper technique can be attained however but do not let the task seem formidable.

Several threads around in search on this subject.

I've learned to clean periodically, D-90 was relatively clean until I changed a lens with the car door open in a Death Vally storm, bad idea). The subsequent shots from later that day were spotted and now, I also check for dust in post, routine.

The D90 is headed to an 11 year old now in Santa Barbara.

Replaced with D3S which has a robust mechanism, will get spotted no matter and a wet clean is normal maintenance every so often.

The D7K, so far has a couple of spots, since it arrived in November, I'm sure it's going to be next.

As mentioned above, all cameras will eventually require cleaning.

HTH,

Rob


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KnightPhoto Gold Member Nikonian since 18th Dec 2006Sat 19-Feb-11 02:20 PM
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#32. "RE: Sensor dust so soon!"
In response to Reply # 0


Alberta, CA
          

> I've switched
>lenses, always at home, body pointing down, nice and easy.
>

For lens-chaning technique just to be sure you are aware, you should also have the camera powered OFF when changing lenses so as to not attract dust.

I hate dirty sensors too. I've got one body that I've been avoiding cleaning, but darn it it'll cost me $70 at my local dealer to do it.

Best regards, SteveK

'A camera is an instrument that teaches people how to see without a camera.' -- Dorothea Lange
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beemerman2k Silver Member Nikonian since 27th Mar 2006Wed 23-Feb-11 02:28 AM
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#33. "RE: Sensor dust so soon!"
In response to Reply # 32


Ellington, US
          

My D7K has gone from bad to worse! Now at F/8 I can see specks in the photos. Therefore, I had no more choice in the matter, my copy of Visible Dust's Arctic Butterfly® 724 (Super Bright) Bundle 7x Sensor Loupe w/ 1.6x arrives via FEDEX tomorrow morning.

I'll let you all know how it goes. If I vanish from the web site for an indefinite period of time, you can assume it didn't go to well

Beemerman2k
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PAStime Silver Member Nikonian since 10th Feb 2009Wed 23-Feb-11 11:52 AM
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#34. "RE: Sensor dust so soon!"
In response to Reply # 33


Kingston, CA
          


>I'll let you all know how it goes. If I vanish from the web
>site for an indefinite period of time, you can assume it
>didn't go to well

Please do let us know how it goes. I've wondered about that device and how well it works. Peter

  

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thibaug Registered since 12th Feb 2011Wed 23-Feb-11 02:50 PM
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#35. "RE: Sensor dust so soon!"
In response to Reply # 33
Wed 23-Feb-11 02:50 PM by thibaug

CA_AB
          

I'm curious to see how it goes for you. I tried one and it didn't help at all. According to the guy in the store you have to catch the dust BEFORE the sensor heats up otherwise the dust gets "stuck".

  

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beemerman2k Silver Member Nikonian since 27th Mar 2006Wed 23-Feb-11 10:38 PM
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#36. "RE: Sensor dust so soon!"
In response to Reply # 35
Wed 23-Feb-11 10:40 PM by beemerman2k

Ellington, US
          

**** MAJOR SUCCESS ****

First of all, I couldn't believe how dirty my sensor was. I was flat out astonished! How did it get to be so bad? My daughter has my D70s, but when I get my hands on it, I'm going to survey the sensor using the Quasar Sensor Loupe, which is a fantastic product by the way.

Overall, this Visible Dust product is fantastic! With just 2 swipes with the wet swab I was able to clean my sensor. I'd say it's about 99% there, but I'm going to punt and live with things for now. I have an important shoot tomorrow and since it'll be indoors at night time, I'm going to be living at wide apertures anyhow.

I did test my sensor by shooting a picture at F/18 and I only see minor traces of blemishes, which for now is good enough. My sensor was filthy! Now it's much better.

OK, here's a sample that I just took. F/18, ISO 2500, 1/50 sec. MUCH MUCH BETTER!



By the way, that's the computer monitor's edge you see on the upper left hand side of the picture. I loaded up a blank Word document onto the computer and took the picture.

Beemerman2k
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Attachment #1, (jpg file)

  

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agitater Gold Member Nikonian since 18th Jan 2007Wed 23-Feb-11 11:58 PM
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#37. "RE: Sensor dust so soon!"
In response to Reply # 36


Toronto, CA
          

IMO if your sensor filter is 99% clean, you're done. Don't worry about it anymore. Trying to pick off one or two tiny motes can be frustrating - you'll get them next time you have to get in there.

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nervesplice Silver Member Nikonian since 09th Apr 2007Sat 26-Feb-11 10:57 PM
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#38. "RE: Sensor dust so soon!"
In response to Reply # 37


Haywards Heath, GB
          

I'm having the same problem, I've only used my D7K a few times and I'm seeing something that looks like water droplets. See here:-



Is this just dust on the sensor or something else?

I've had a number of DSLR's in the past and have never had anything like this before, especially so early on.

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Attachment #1, (jpg file)

  

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beemerman2k Silver Member Nikonian since 27th Mar 2006Sun 27-Feb-11 12:57 AM
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#39. "RE: Sensor dust so soon!"
In response to Reply # 38


Ellington, US
          

Are these blemishes showing up on your photos at all apertures or only on apertures lower than, say, F16 or so (by lower, I mean a higher number)?

I plan to get intimately familiar with the sensor cleaning process. I don't know if this sensor somehow attracts artifacts or if it's just that at 16mp, these things are now visible where as they were not so obvious with smaller mp sensors.

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nervesplice Silver Member Nikonian since 09th Apr 2007Sun 27-Feb-11 10:23 AM
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#40. "RE: Sensor dust so soon!"
In response to Reply # 39


Haywards Heath, GB
          

I start to see them very faintly at around f/5.6 and they get more obvious at you stop down the aperture (smaller aperture). The Picture I posted is at f/22, I've updated a series here http://bit.ly/hkR3KE from f/1.8 to f/22 so you can see the how stopping down effects the spots appearing.

Regarding the higher number of pixels I upgraded from a Canon 50D which was 15.1MP and I never had any problems with spots/dust on the sensor. I can't see how a jump by 1.3MP would make so much of a difference.

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agitater Gold Member Nikonian since 18th Jan 2007Sun 27-Feb-11 02:47 PM
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#41. "RE: Sensor dust so soon!"
In response to Reply # 40


Toronto, CA
          

I think it is somewhat difficult to discuss the subject without at least some hint about the possible source of the dust during a lens change, a particular zoom lens which pumps dust, spit from someone blowing into the mirror box, etc., etc.

Canon sensors are no more or less attractive than Nikon sensors to dust and other pollutants which enter the mirror box. But dust and other pollutants don't enter the mirror box and sensor well by magic. There is always a reason - lens changing habits, cleaning methods, storage method, environment and so on.

I don't find my D7000 sensor to be any more or less attractive to dust than my D700, D3s or Canon T2i.

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nervesplice Silver Member Nikonian since 09th Apr 2007Sun 27-Feb-11 09:56 PM
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#43. "RE: Sensor dust so soon!"
In response to Reply # 41


Haywards Heath, GB
          

>I think it is somewhat difficult to discuss the subject
>without at least some hint about the possible source of the
>dust during a lens change, a particular zoom lens which pumps
>dust, spit from someone blowing into the mirror box, etc.,
>etc.

Agree, though I've only used the camera a few times since I got it, I suspect it was shipped like this but as I didn't take photo's with a stopped down enough aperture to notice its hard to say for sure.

I'm always careful when changing lens's i.e. changing with the body face down, the camera is stored in a weather proof case in a dust free environment. All the lens' I've used are brand new Nikon lenses so I can't see how its been transferred from a lens. And I've not blown or put anything into the mirror box.

I've contacted Nikon Support to see what they say as I've read a few reports of people having their D7K shipped with oil/lubricant from the shutter mechanism. The dots I'm seeing look like droplets of liquid so maybe I was unlucky.

Either way it looks like the sensor needs cleaning, does anyone know of a good place in central London that can professionally clean a Nikon D7000?

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agitater Gold Member Nikonian since 18th Jan 2007Sun 27-Feb-11 11:55 PM
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#44. "RE: Sensor dust so soon!"
In response to Reply # 43


Toronto, CA
          

London Camera Exchange, 98 Strand, just before the Savoy.

Jacob's at 74 New Oxford Street, southwest of the British Museum.

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briantilley Moderator Deep knowledge of bodies and lens; high level photography skills Nikonian since 26th Jan 2003Sun 27-Feb-11 02:56 PM
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#42. "RE: Sensor dust so soon!"
In response to Reply # 40


Paignton, GB
          

>I can't see how a jump by 1.3MP
>would make so much of a difference.

It wouldn't.

Brian
Welsh Nikonian

  

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