You wouldn’t want to watch a 24-minute video documenting the assembly, in Japan, of a 70-200mm zoom lens, would you? https://www.youtube.com/watch?v=qx14Juo4AQo
[The screwdriving apparatus is to die for. Also the application of black paint to the lens edges.]
@timbray
> The process of making telephoto zoom lenses: Japan's factory for insanely powerful camera lenses.
That's interesting, but funny, too.
I have a Sigma 70-210 zoom that fell apart in my hands one day for no discernible reason other than that it was sloppily built. I don't regard Sigma lenses as particularly high quality and a 70-200 is not insanely powerful.
Tim Bray
cmeier