Type: 720nm Infrared. Blocks light below 720nm. Optic: Schott Glass B270. Pig Iron 67mm Infrared R-72 Filter. Professional grade infrared filter from Pig Iron. Model: Pig Iron Infrared R-72. Can be paired with Pig Iron coloured black and white contrast filters such as the R1 (red), YA2 (orange) etc to change the colour rendition or contrast effects.
eBay