Canon Lenses, How they are Made

I found this site earlier today and thought I would share, it shows the manufacturing process of a 500mm F4L. I found it interesting, and no wonder big telephoto's cost so much





[View:http://manufacturingexcellence.blogspot.com/2007/10/canon-lens-plant-tour.html]

That was cool.

It a great vid. Thanks for sharing. Thought they would have used torque wrenches when screwing the lenses down. I guess there isn