Leica lenses are some of the most precise and impressive glass ever made to be attached to a camera and we've spent many a spare moment wondering how the German firm produces such exacting products.

Well, luckily for us, Leica have just released a video showing the "hand-crafted" and "meticulous" manufacturing process in action. And we have to say it's a thing of beauty itself.

The video covers the 100 different types of glass, the 60 quality control checks each lens is subjected to and the 30+ production processes… and that's just the start.

A spokesperson for the firm said: "In the age where technology almost inevitably means mass manufacturing, Leica products are still made with exacting precision by the hands of highly-trained technicians."

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