Quality Control: Why Camera Lens Copies Vary – Home of the L-series: Inside Canon’s Utsunomiya lens factory — Master Craftsmen can tell when to apply more or less pressure by feel alone. Some processes, like this one, are considered so critical that they must be performed by hand

The home of the L-series: Inside Canon’s Utsunomiya lens factory

With decades’ of experience, Master Craftsmen (or ‘Takumi’) can tell when to apply more or less pressure by feel alone. Some processes, like this one, are considered so critical that they must be performed by hand.

It typically takes between 25-30 years before a lens polishing technician attains the status of ‘Meister’, and their experience is essential to the production line.

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