Please help, When I make a video recording the auto focus records the motor sound onto the video recording which is very discernible in the playback and always there ruining my videos. This has always been there since buying this secondhand D3200 and I wonder if it is a temporary Technical Fault, a BAD SETTING ( on my behalf ) in the program OR just one of the bad peculiarities of this Model. I WONDER whether I should have bought a Camcorder instead. IS THIS FIXABLE ???