I bought D610 last week expecting the oil spot problem is gone. Previously, I purchased D600 but returned to the vendor due to too many oil spots with the photo taken with f16 against the sky. I tested the new D610 just in case for the oil spot on the day I received it. It is within 100 shutter count that I took the sky with f16 to check for any oil spot. Much to my surprise and disappointment, I found 2 oil spot on the upper left corner and top mid area. I am not sure if the oil spots will show more as I take more pictures. I see one post in B&H D610 comment section that one reviewer posted the D610 photo with an oil spot. My question is that if this is normal for the D610 to have 2 oil spots from the beginning even though Nikon says they fixed the oil spot problem in D610. Or it my unit a defective one so I need to have this exchanged? Could the D610 owners please make comments on this? Thank you very much.