#3. "RE: D5100 & 70-300 VR" In response to Reply # 0
The D5100 fully supports the 70-300mm f/4.5-5.6G ED IF AF-S VR including AF. Do they have the AF/MF switch on the 70-300mm set to AF? Is the lens fully seated and locked in the mount? Is the camera displaying an err message FEE or F--?