Canon RF 85mm F1.2 L USM DS Instructions Manual page 14

7. Filters (Sold separately)
You can attach filters to the filter mounting thread
on the front of the lens.
Only one filter may be attached.
z
If you need a polarizing filter, use the Canon
z
Circular Polarizing Filter PL-C B.
Detach the hood when adjusting the polarizing
z
filter.
ENG-13