The Cokin Filter P007 Infrared 720 (89B) is especially suited for black and white infrared film. This filter blocks the visible spectrum and lets only infrared light through. It is a lightweight filter with optimal optical performance.
Cokin A filter holder
The Cokin A series filters have a size of 85 x 85 millimeters and are made of high quality CR-39 organic glass. You will need an adapter ring and the Cokin Filter Holder BP-400 to attach this filter to your lens.