Summary: As long as Nikon requires that owners return the camera for cleaning, this camera was not worth the hassle. Returned for full refund. The sensor spots are really too bad, because it's a beautiful camera.
Summary: I Purchased this product about 10 months ago. Major dust and Oil issues to date. I had it professionally cleaned by a NIkon dealer and the oil and dust still appeared. These issues especially the oil ruined a lot of good photo's and also cost time and money. This is unacceptable and I hope changes are made. Sending it away for repairs this will be a inconvenience for sure.
I would give this camera a great review if it didn't have this huge disappointing defect.
8 January 2014
Summary: I have had this camera for over a year, so unfortunately the warranty is expired. :/ Have done a ton of shooting with it, and occasionally noticed some spots, but figured that I just needed to clean it.
Summary: On the surface, a great camera. FX, right price, great features for what I do. But i have been hit with the oil spot problem. Cleaned by Nikon once, and now two months later (about 3000 shots), it needs another cleaning. The service crew has been great, but Nikon has not addressed the issue to my satisfaction.
3rd time / Oil/Dust on Sensor continues at 1 year !
21 November 2013
Summary: This last YEAR has been a nightmare with this camera. It's been in for repairs three times because within a month of getting the camera back, the same problem comes up again. If you want to clean your own sensor every few weeks and don't mind putting up with post processing removal of these spots, this camera is for you. I hate this camera right now. They replaced the shutter but that didn't help at all.
Excerpt: I bought this camera because I didn't want to buy the D800 and have enormous files. BIG MISTAKE!!! There are oil spots even though it is refurbished. Nikon will not do anything but clean it and they will reappear again.
Summary: I've been a long-time Nikon user for the past 20+ years. The D600 was my first move from film to DSLR. I was absolutely disappointed when my sensor was splattered with oil spots. This is not an issue blown out of proportion ... I hear some cameras don't have this problem, and that is a good thing, but here's my experience: purchased a brand new D600, read about the oil spot issue, and discovered I had one of the defective bodies.
Dust Oil Spot continues for a year despite repair.
9 October 2013
Summary: Had this camera for a year and Nikon hasn't been able to repair it, the spots on the sensor continue. A friend bought a NEW D600 camera several months ago, he is having the same issue. Buyer beware, you've been warned.