Oil spots/AF issues--called Nikon for service

hark

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Today I finally called Nikon Customer Service about the two recurring problems with my D600: sensor oil spots and problems with the auto focus. After speaking with the rep for a while, I am to upload 2 photos of each issue to their link then they will get back to me on how to proceed.

After the first problem with the oil spots, I cleaned the sensor myself--it was fine for a while. When they appeared again, I had trouble removing all the traces of oil when wet cleaning the sensor the second time. There were a few very stubborn, but faint, spots remaining on the sensor. Even taking a few test shots caused more spots to appear. I cleaned it off the best I could. Then I took photos using the continuous burst mode, and that caused even more oil spots for the third time.

The Nikon rep was very nice, but when he made one specific request, I asked him to repeat himself--I thought I heard him incorrectly (even though he spoke English well, it wasn't his primary language). Still surprised by the request, I repeated it back to him in the form of a question....You WANT me to clean my low pass filter?!!! He confirmed this and told me there are sensor cleaning kits available for self-cleaning. :eek: For those who have sent their D600's back to Nikon, were you asked to do this?

Since I already cleaned it on at least 3 separate occasions, I admitted to already doing so. He was fine with that. I'm just surprised they are asking consumers to do this on their own.

The AF issue has been chronic. My D90 auto focuses MUCH better plus I never had any issues with my N90s and N70.

All the photos are to be unedited, and if any resizing is to be done, it needs to be done with some type of Nikon software. Since I never installed any Nikon software, did the D600 come with something that allows resizing? Thanks for any info! :)

I will update after my photos are scrutinized by Nikon. And for the auto focus problem, apparently they have software which tells them where the camera focused in the photos--at least that's what I was told. More later.... Will probably take new photos over the weekend and upload them to Nikon during the beginning of next week.
 
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Razpewton

Senior Member
Bought a D600 yesterday and I'm a little concern with what I'm reading about the oil and dirt spots. It seems it's been going on for sometime. Has NIKON addressed this issue? What are my options? I mostly take pictures at DIRT Tracks, so I'm already in a dusty environment. Does the D300 have the same issues? Thanks for any feedback.
 

Rick M

Senior Member
Bought a D600 yesterday and I'm a little concern with what I'm reading about the oil and dirt spots. It seems it's been going on for sometime. Has NIKON addressed this issue? What are my options? I mostly take pictures at DIRT Tracks, so I'm already in a dusty environment. Does the D300 have the same issues? Thanks for any feedback.

I do not think the D300 had this issue. Nikon has haphazardly addressed it by cleaning or replacing some sensors. It does seem to dissipate over time. Some newer ones have not had this issue, hopefully your in that group. Run some tests at f16-f22 to see. I've just cleaned my sensor at 4,000 shots and it is not emerging again. In your harsh environment, you'll need to clean your sensor no matter what model you get.

​Welcome to the site!
 

hark

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I took a few test photos today--some of the sky to show the oil spots and some to show the focus problem. Here is an edited photo of the sky (Nikon doesn't want an edited photo but this is darker to show the spots more readily) which represents the upper righthand quarter of the photo. The oil covers the entire photo even across the middle although this righthand section has more oil spots than the rest.

010edit.jpg



I did take additional photos to show the focus problem, but now I'm wondering if the problem has more to do with the shutter button rather than the autofocus itself. I used a tripod and moved the single dot around the viewfinder to use for auto focusing. I don't normally focus this way, and I'm not sure that it was a problem.

Usually I focus on something, hold the shutter halfway down, then recompose and shoot. I'm wondering if the focus isn't locking when the shutter is held halfway down. Yes, I know there is a button on the back of the camera which can be assigned as a focus lock, but I have chronic tendonitis in my forearms which makes it uncomfortable when trying to move my thumb into position. This D600 is the only camera where I've experienced this problem. I will take some additional photos then call Nikon to see what they recommend because I'm not sure how to take a test shot for a recomposed photo.
 

hark

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What was your aperture set at for this photo?

I used f/36 but only because I wanted to be sure as many spots as possible showed up; however, realistically sometimes I make use of f/16 although I know it's not highly recommended. They wanted a photo as proof before I send out my camera for service.
 

nzswift

Senior Member
In the Playback Menu there is a item "Playback display options"
Open that and there is an item "Focus point"
Open that and select "Done"
It shows you which AF point the camera used to focus if you used single point AF or dynamic area AF...
 

Rick M

Senior Member
I think at f36 there is not a single digital camera that wouldn't show spots. Focusing and recomposing (I do it too) can often lead to unsharp shots. By selecting an off-center focus point (what we should do), the AF system is dealing with the curvature of the lens in determining the optimum focus. When we focus and recompose, we are not compensating for the lens curvature and the focus distance changes with our movement creating softer images.
 

hark

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nzswift and Rick, thank you for your input. Both of you have given me valuable information! :)

nzswift, wish I still had some of the files on my card, but I reformatted it long ago. Would be interesting to see which focus spot I used.

Rick, really good to know about not using the center focus spot (which tends to be what I've been choosing). I don't have this issue with my D90 though. However, I will try to select a different spot to use in the future. ;)

As for the oil spots, I will take a few photos at either f/16 or f/22. I already know they will show up there, too, because I took a landscape photo using f/16, and those little buggers were there. Grrr... I haven't yet uploaded my images to Nikon so I can retake a sky shot at f/16 for Nikon.

This afternoon I took a few test images using my Sigma 70-200mm f/2.8 wide open at 200mm at the minimum focusing distance. I couldn't replicate the problem, but it isn't the lens I carry with me outside. Now I'm wondering if it is a lens issue with my Nikon 70-300mm f/4.5-5.6--not sure if I've used it on my D90 lately, but perhaps I will give it a try. I have a couple files to submit to Nikon, but since I tend to focus and recompose, I'm not sure that identifing the focus point will yield any help, will it? If the camera refocused on something else when I recomposed, how would Nikon know?
 

hark

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Okay...to be fair, I reshot the sky using both f/16 and f/22 and can use both of the uncropped images to submit to Nikon (one at f/16 and one at f/22).

Here is f/16. This is the upper right hand quarter of the photo so it is the same section that I posted earlier. The only editing I did was to increase the shadows by 21% to make the spots more visible, and I cropped the upper right quarter of the photo and resized for the forum. This is 25% of my sensor.

039 f16 resize rt corner.jpg



And below is the upper left hand quarter of the photo shot at f/22. Besides cropping to isolate the upper left quarter of the photo and resizing for the forum, I lightened the shadows by 21% so the spots would be more visible. This is a different 25% of my sensor.


042 f22 lt corner resize.jpg
 

Rick M

Senior Member
It is definitely worth having them fix the oil spot issue (hopefully a new shutter). Might want to test for focus issues using a tripod and decent shutter speed to isolate if it is a handheld/composition change issue.
 

hark

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Last night I uploaded 4 photos--2 for the oil spotting issue and 2 for the focus issue (Nikon requested two for each problem). This morning I received an email thanking me for uploading the images and that they would be reviewed shortly, then just over an hour later, I received another message with info on how to send in my camera for service. Will update as this progresses. ;)
 

hark

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According to UPS tracking, my D600 arrived at Nikon's repair center Monday morning. So far I haven't received any status update so I called and asked how long that will take. The response was 24-48 hours from the time the repair arrives. Hopefully I will hear from them tomorrow (Wednesday). :)
 

Dave_W

The Dude
I think at f36 there is not a single digital camera that wouldn't show spots. Focusing and recomposing (I do it too) can often lead to unsharp shots. By selecting an off-center focus point (what we should do), the AF system is dealing with the curvature of the lens in determining the optimum focus. When we focus and recompose, we are not compensating for the lens curvature and the focus distance changes with our movement creating softer images.

I don't know if this still applies to modern DSLR's that have the new cross-type AF sensors. The only caveat is the cross-type sensors work only up to f-8. At least I think this obviates the issue of len curve...maybe.
 
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