>Hi Ian, > >Like Marty I am going to say look very closely at the lens >& mount contacts. I had this same problem with my D300 and >70-200 early on. Once cleaned and 140,000 shots later still no >problems. DeoxIT is the product I used to clean with. I got it >at Radio Shack.
Thanks y'all. had same prob with my D300. cleaning the contacts fixed it.