I just received a Refurb'd D600 today. I've only taken one shot. Focused to <12 inches at f:22. I took a shot of the sky and just looked at the shot. The sensor is really dirty. The shutter count is 490. If this is truly refurbished, I would have thought the sensor would have been cleaned. I'm pretty disappointed considering all the grief Nikon has gotten on this topic. I'll take a few shots to see if the smaller body suits me. I'm looking to shed weight. Since they dropped the price to $1599 I guess I can pay someone to clean the sensor for me. I'm somewhat aggravated though.