Cavision 95mm Hot Mirror Filter 30-layer coating

What It Is

The Cavision 95mm Hot Mirror Filter uses a dielectric mirror to remove infrared light pollution that appears during long exposures near strong IR sources such as fires or sunset. It is built for digital-camera users who need accurate colour rendition without losing visible red wavelengths. The 30-layer coating on optical glass provides consistent performance for both indoor and outdoor shooting in bright conditions.

Practical Limits

The filter threads onto lenses with a 95mm front diameter, so it only fits that specific thread size. Its dielectric mirror targets infrared wavelengths while transmitting visible red, meaning it will not correct colour shifts caused by ultraviolet or visible-light contamination. Long exposures in extreme IR environments may still show residual pollution if the source intensity exceeds the coating's rejection capability.

Capacity And Headroom

The 30-layer coating delivers reliable IR reduction for typical landscape, architectural and creative long-exposure work. It comfortably handles bright daylight and moderate artificial IR sources without degrading visible colour fidelity. Very intense or prolonged IR exposure, such as direct furnace or welding arcs, can overwhelm the filter's blocking capacity and introduce unwanted artefacts.