I am currently handling a warranty case on my D7000 and I would appreciate your opinion.
Last week I noted that on low aperture, wide angle shots of the sky a number of spots were appearing on my photos on the computer screen and I asked the local Nikon agent (that sold me my camera) for their opinion after reading the blog topic http://nikonrumors.com/forum/topic.php?id=3289
The spots were similar to the ones shown on this entry.
The agents immediately suggested that I take in (my 2 month old) camera for service and I did so on Monday.
In the course of the service yesterday afternoon I found out during a phone call with their service manager that the sensor was clean and that they were investigating the cause of the spots. They also alluded that such spots were acceptable for my camera which was the first time that I got alarmed.
In the evening when I got home I found an e-mail saying that the camera was ready for collection without any explanation. The camera was released from a secondary retail outlet and the salesman without a work / findings report. The agents just send a 4X6 test photo of the sky as “proof” that the camera was fine.
After collecting the camera I tested it and immediately was able to zoom on a spot of a RAW photo using the camera screen. I returned home and on my monitor without zooming I noted two obvious spots. Many other blotches appeared when I processed the image into negative (I counted at least 10 without zooming). I therefore sent a report back to the local Nikon agents stating that the camera must have a defect due to the findings after their cleaning and demanded a warranty replacement.
The local Nikon agency advised:
(1) They can only guarantee perfect cleaning on JPEG images not on the RAW format images (which does not make any technical sense to me).
(2) The agent claimed that Nikon stated that the camera does not have a problem. He claimed that Nikon suggested to use their NX2 capture software as a solution to the spots on the RAW images. He added that the spots are apparently originating from atmospheric contamination (which is strange as they appeared on a new camera , immaculately handled and were still present after cleaning at an authorised Nikon shop).
(3) The local agency thinks I am being over-demanding and fussy about my camera.
I am still of the opinion that my camera has a defect and that my claim stands - but I am seeking some advice before deciding what to do next.