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It’s sometimes hard to fathom spending $12,000 on a Canon EF 600mm f/4L IS II or $45,000 on a Canon CN-E Canon CN-E 30-300mm T2.95-3.7, but Canon’s broadcast lenses are a whole different animal. Take the $222,000 Canon UHD Digisuper 86 for example (please buy one from my link, because that would be cool).
Popular Science has posted a great article about some of these lenses that can cost well over $200,000. To be fair, there’s not for the general consumer, but NBC apparently have 70 of them in use at the 2018 winter Olympics.
These lenses are manufactured to the strictest tolerances for obvious reasons.
Lens elements are typically ground down from rough glass blanks, and then polished—sometimes by hand—to get rid of imperfections. “We spend a lot more time polishing 4K lenses because imperfections that measure just a nanometer can affect performance,” Read the full article at Popular Science
Canon really does have the full spectrum of lenses available for whatever is required.