I took this photo the other day and am very unhappy with the quality. There appears to be a bit of color shift around the letters on the barn and just not very sharp. This is one of many photos taken of the same subject that all have the same problem. This was shot with a D300, Nikon 28-200mm at 200mm, ISO 200, F8, 1/125 sec exposure, raw and jpeg. Similar situation with raw and jpeg. Is this a problem with the lens or user? Any thoughts appreciated.