Infrared (IR) light starts in the high-red area of the visible spectrum at around 750nm and goes up beyond 1000nm. This light is not visible to the naked eye. The IR cut filter on the Blackmagic Pocket Cinema Camera 4K is weak and is susceptible to some IR pollution under certain circumstances. I wondered if I could film in infrared with this camera. I used a Cokin 720-89B Infrared filter. This filter only passes light at 720nm (high-red) and above. These are my first results. I did not bother to remove the noise as this is simply a test.
The lens I used is an 8mm f4 from SLR Magic.