savvygrouper

Hey! Yesterday I picked up a brand new Sony 200-600, and everything seems to be working perfectly. However I have my doubts on a specific sound the lens is making. It sounds like a very subtle computer fan, with OSS and Auto Focus turned off on the lens I still hear it as long as the camera is turned on. So now I'm wondering if this is normal or my lens is faulty. The sound is constant, regardless of the setting that the lens and camera (A7IV) are set to. Other than that the autofocus sounds fine and there are no other concerning sounds. I also own a 100-400 GM and I've never noticed anything like that. Has anyone else had this experience or is this just a standard for all 200-600 Gs from Sony? If so what's making the sound? Thank you!