Tiffen's Hot Mirror Infra-Red Neutral Density (HMIRND) combination filter solves the IR pollution problem, addressing both the Near IR and IR regions of the spectrum. IR pollution is a significant issue in many of today’s hi-definition cameras which are inherently sensitive to infra-red light, particularly those that do not incorporate an internal IR blocker (single CMOS cameras). The HMIRND filter blocks unwanted IR light and has matched IR and ND components to assure accurate color reproduction in the near infra-red region. In addition, The Tiffen Hot Mirror (HM) filter is offered as a stand alone filter for those looking to block just the IR portion of the spectrum, with no appreciable loss of light transmission.

The Tiffen 4x5.65 IRND Filter Set includes the following filters: .3, .6, .9, 1.2, 1.5, 1.8, and 2.1.