LensRentals has posted a teardown of the Canon RF 50mm f/1.2L USM Lens. This lens does not appear to be a good candidate for do-it-yourself repairs.
You can rent the Canon RF 50mm f/1.2L USM Lens from LensRentals or purchase the lens at B&H, Adorama, Amazon US, Wex Photo | Video and Henry's.
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