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| p.1 #9 · Canon 200-400 hands on |
What I understand is, due to the Tsunami, floods in Thailand or whatever, Canon got behind in growing the fluorite for the UD elements. So, consequentially, they have had to adjust priorities, meaning the more popular lenses get the UD and the super lenses are going to have to wait in line.
Not exactly. Canon defines UD elements as having extremely low dispersion (similar to ED in other brands), but not made from fluorite. The fluorite elements are listed separately from UD in the specifications.