How Lenses are produced

Canon EF 500 F4 L 
With lenses beeing one of the most important elements of the DSLR Photography (bodies you buy avery 5 years... but good lenses you keep forever!) it´s quite interesting to get to know how this pieces of glas are produced. In the following videos you will see the making of a Canon L (the expensive ones!) series Lense:

Part 1:

Part 2:

Part 3:

So, now you know why this things do cost a lot of money :-)

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