Zomei Original 77mm IR Filter 680NM 720NM 760NM 850NM 950NM X Ray Glass Infrared Filter For Canon Nikon Sony Pentax Hoya lens|filter for canon|77mm ir filterinfrared filter - AliExpress
Infrared Video + Photo Testing : Hoya R72 Filter on a Canon EOS 6D - YouTube
Hoya 55mm Infrared R72 (720nm) Special Effect Filter - Made in Japan B-55RM72-GB 24066015440 | eBay
Hoya IR R72 Filter for infrared photography 67mm 24066015471 | eBay