Sound when usining camera

[Gnubbo]

I just used the wide lens to make a macro shot and I heard some noise from the camera.
If i get close to the earpiece I can hear some noise, some little wiring and muffled noise. I'm really not an expert and I don't know if this is normal or not, maybe some of you can tell.

[PhaGWiZ]

most likely the image stabilisation or focus lenses