The Tiffen 4 x 5.65″ Full Spectrum IRND 1.8 Filter is a combination of both an infrared control filter and a 1.8 neutral density filter. An IRND is ideal for HD cameras, which have greater low-light sensitivity and, subsequently, an increased susceptibility to IR contamination. When using a standard neutral density filter to counter the increased light sensitivity afforded by the HD sensor, the effects of infrared pollution become more apparent. This filter combines an ND filter with a comparable IR control filter to eliminate the spill of infrared light reaching the sensor while still maintaining the extra exposure benefits of a neutral density filter.
This filter is constructed from Water White glass and is made using ColorCore technology, a process that involves laminating the filter substrate between two pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch. This filter measures 4 x 5.65″ / 101.6 x 143.5mm.
Infrared control filter helps to block infrared pollution from affecting the color fidelity of imagery; this enables a wider color gamut and truer colors, especially noticeable in the darker regions of the image.
1.8 neutral density filter provides a 6-stop exposure reduction.
Water White optical glass for excellent clarity.
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Tiffen 4×5.6″ Glass Filter IR ND 1.8 is avalable to rent at FRENEL rental.