B+W 77mm Slim Infrared Blue-Green 489 Filter

The B+W 77mm Slim Infrared Blue-Green 489 Filter is an infrared protection filter for use with devices, such as some CCD sensors, which are sensitive to infrared light. This filter suppresses infrared radiation at or greater than 780nm. The green tint causes infrared absorption to begin at 600nm, and, therefore, does slightly weaken long-wave red light. This green hue and 1.2 filter factor are easily corrected for electronically when used for CCD applications.