If you ever wondered why a lens cost so much money to make (and some of the nicest lenses are digging holes in our wallets), take a look at this. It takes you through the entire process of manufacturing a Canon lens if you click on Please visit the Virtual Lens Plant (specifically the manufacturing of a 500mm f/4 IS – definitely a large chunk of glass).
It’s nice, clear, technical, interesting and full of details. The only drawback of these videos is that they are quite sensitive to the speed of your Internet connection (this is very true if you live in Europe). There are three tabs once you get to the video, make sure you check them all out!
[Provided by Juli]