Mystery: Different Canon RF 100-500mm Lenses Similarly Cracking
January 22, 2021
Roger Cicala of Lensrentals noticed that multiple copies of the Canon RF 100-500mm f/4.5-7.1 returned to the warehouse with the same visible crack in an internal element. Why it kept happening was a mystery.
Cicalas initial assumption was that it had to do with Canon’s change in the optical stabilization system, which no longer locks down like it did in previous lenses. If you shook an older…