I have been using D7000 for last 2-3 mo and working well, till recently when I have been noticing the pics to be dull, somewhat foggy without vibrant colors. Focus is fine, just not bright and brilliant like they used to be. I have changed to various settings without any improvement. I am not a pro and might have made some inadvertant changes in settings. I use nikor AFS 35mm f/1.8G and ED 16-85 f/3.5-5.6 lenses. Thanks.