I recently bought a TC-20 III teleconverter from Amazon. I returned it because it sounded as if something was loose inside. I received another one from them and - same thing! Have not used the first or second one yet.
Is this normal?
Gail Goldstein D8ooE D800 AF-S NIKKOR 24-70mm f/2.8G ED AF-S NIKKOR 70-200mm f/2.8G ED VR II AF-S NIKKOR 600mm f/4G ED VR