Camera elements Video Illustration

Camera elements Hello to all experts I want three dimensional video that explains how the camera works. Video camera should be SLR, it is important to be without firm. I want to see at first the camera turns around in slow motion and then stops in angle so you can see the lens from the side. Now, while it still in a side view I want a demonstration of light enters through the lens into the camera. Then look inside the camera and show how the iris works(open and closed) The final is to show how the shutter works, open and close. p.s - I need the backround in white. Thanks