It’s a fascinating documentary video, and worth watching if you have any interest in camera equipment.

Image © Canon, Inc.

There’s a long process involved in just making even one piece of glass. When you consider that many lenses contain between 10-18 pieces of glass with various coatings, and with precision being of the utmost importance… you can certainly begin to understand why good camera lenses are so expensive.

Image © Canon, Inc.

You can find more geeky camera goodness in the Canon Camera Museum.