The camera wasn't mine, so I had know idea how to work
Yes I used servos. 4 Hitec HS-311. Two for the eyes, one for the head swivel, and one for the mouth. For the mouth, I centered the servo-attached a horn at 90 degrees and then with a piece of acrylic attached to that, mounted it to the back of the bottom of the mouth. The servo it self is mount to the back side of plate you can see in the picture.