I have searched through many of the posts related to dirty sensors and have not found anything on this topic. A few weeks ago I started shooting some landscape photos at small apertures with my three month old D700. There was one very noticeable "spot." It did not look like typical black dust spots and I could not remove it with a rocket blower. They almost look like water??? I purchased some Sensor Swabs and cleaned the sensor. Problem resolved.
I noticed this week that I had new spots on the sensor (four to be exact). I again cleaned it with the Sensor Swab and the test shots showed they were gone.
Today they are back (three this time). I concerned this is a camera problem. I have attached a photo with the three dots.
Is this a camera issue? Is this something I am doing? Any chance it is related to cold temperatures? Other?
I appreciate any help or insights you may have.
#1. "RE: Spots on sensor (NOT dust)" | In response to Reply # 0olivierrychner Nikonian since 03rd Jan 2005Sun 16-Jan-11 07:30 AM
Probably oil/grease from the mirror mechanism. They are a PITA, but it's difficult to operate a mechanic mirror without some oil at least...
I guess that as the swabs do the job, you had better just to be prepared to clean them from time to time!
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#2. "RE: Spots on sensor (NOT dust)" | In response to Reply # 0expat Nikonian since 09th Mar 2010Sun 16-Jan-11 09:28 AM
Have had these on my D200 & 700, usually have to swab twice.
I have never seen dust as such only sticky stuff. Its only obvious if I take say a blue sky and do an auto levels/zoom in NX2.
Yes I know the retouch will remove them from the image but thats not really good enough is it. I keep my cameras in mint condition and am very careful about changing lenses and dont if I can avoid it but as I say it isnt dust which can be blown or (built in vibrated) away.
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#3. "RE: Spots on sensor (NOT dust)" | In response to Reply # 2JoelB Registered since 18th Dec 2010Sun 16-Jan-11 03:44 PM
Thanks for the help. I cleaned it again this morning. See how long it takes to happen again....
Does this continue to happen indefinitely or should I expect it to subside as the camera is used more?
#4. "RE: Spots on sensor (NOT dust)" | In response to Reply # 3gplauche Registered since 17th Jun 2010Sun 16-Jan-11 07:15 PM
I have the same problem, but unfortunately they are not that easy to clean off in my case. The local camera store has tried twice to clean the sensor but was only able to clean some of the spots. I have begun trying to clean it myself but haven't much success. I need to send it back to Nikon but don't want to give the camera up for several weeks. I'm also not convinced that the cleaning would last. I believe that excess lubricant from internal parts is being splattered when the mirror moves. My D700 takes amazing pictures compared to my old Olympus system, but my old camera did not have this issue.
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