It was a slow day at the office. Not really, this was done all after hours! I scanned my Nikon D700 with a 70-300mm lens attached in a GE 64 slice Lightspeed CT scanner. The images were then rendered in 3D on the GE AW workstation make the rotation animations.
For a lot of fun try this QuicktimeVR model of the camera here. This is an 18 meg file so be patient.