A70 wierd sound

[osgoode]

when try to focus on a object, there is a sound "da da da... da" before the focus sound "di di"
and when open the camera and close the camera, there is this kind of sound

[stduc]

I think what you are hearing is the sound of the focussing motors. The other noises would appear to be the startup and shutdown sounds. In a phrase RTFM!