Summary: Camera has great features but oil spots on sensor is inexcusable. I bought 1 refurb unit and sent it back because it was full of spots on sensor. The next refurb had 2600 shots and 2 spots on the sensor upon arrival so I figured I would see what develops. How can they say refurb and not fully clean the sensors? At 3200 shots there are 2 more spots. I like the camera's features and the price I paid but am very disappointed with Nikon's Quality control.
Summary: This is a good base level DSLR. Unfortunately I have the ongoing dust issue which us disappointing for a Nikon product with so many features.. It would be good to see Nikon rectify this issue.
Summary: I have had my D600 since Jan. 2013. It is now Aug. 2013. I have finally decided to send in the camera for a fix to Nikon for the excessive dust on the sensor, I do not change lenses but the dust keep appearing. I ma not sure it's dust, but some sort of poor engineering particles that consistently appear. I wish now that I bought the D800. I hear that doesn't have dust issues. I would not recommend this camera.
Summary: Nikon really dropped the ball on this one. The sensor on mine became covered with oil spots soon after I started using it. B&H where I bought it from said that I could return it but they could not guarentee the replacement would be any better. Everything else about the camera worked fine and despite the spots I decided to keep the one I had in fear I would get one even worse.
Summary: AF accuracy is better than D7000, especially the outer AF points and even with F1.8, the accuracy was pretty good. High ISO was good. I had 200 clicks of the shutter and got 8 oil spots on the sensor at F8 and above. What a shame.