Tiffen IRNDs are a combination of both an infrared control filter and a neutral density filter.
An IRND is ideal for HD cameras, which have greater low-light sensitivity and, subsequently, an increased susceptibility to IR contamination.
IRNDs are 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.
These filters are constructed from Water White glass and are 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 filters helps to block infrared pollution from affecting the colour fidelity of imagery; this enables a wider colour gamut and truer colours, especially noticeable in the darker regions of the image.
- 0.3 – 1-stop
- 0.6 – 2-stop
- 0.9 – 3-stop
- 1.2 – 4-stop
- 1.5 – 5-stop
- 1.8 – 6-stop
- 2.1 – 7-stop
Progressive Broadcast Hire Ltd
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