I am learning in a great hurry just how good some of the D600's images can be. I took mine out over the weekend, not fully convinced at just how it could handle the different conditions with the 24-120mm. It not only lived up to its new reputation but the lens did what was asked of it too. I have to say though, maybe only with the 24-120mm lens, it gets a little sensitive to changes in light and you may have to make settings changes regularly to compensate. I'm talking clouds etc not just low sunlight (as in sunset). Once the compesations have been made, it's back to business though. The day was foggy in the morning, clearing to a beautiful sunny day by about 8:30 which held until about early/mid afternoon when it suddenly got a bit cloudy,, no real chance of rain though, just clouds and some were a little dark too, then back to blue sky again mid/late afternoon. So a good cross section of photograhic conditions...
The D300 I also took along, seems just that little bit better off in these sudden changes of light and very few changes, if any, had to be made unless things get really dark. To be fair on the D600, it may well just be a characteristic of the 24-120mm/D600 match. I have yet to buy or try another lens on it. I took along a 70-300mm lens but in my wandering, I forgot to use it. There are obviously good times to come...