I found this series of three videos on You Tube on how the Canon 500 F/4L IS USM lens is made - unbelievable what goes into making them and well worth watching

cheers

david taylor


http://www.youtube.com/watch?v=MKNFW0Yw ... re=related


http://www.youtube.com/watch?v=qzpt49qq ... re=related


http://www.youtube.com/watch?v=6bQ3-DWh ... re=related