Light in the IR spectrum can cause unwanted false color shifts and prevent the camera’s digital sensor from capturing true black tones. To solve this problem, Schneider’s Platinum Series IRND filters limit the light striking the camera’s CCD or CMOS sensor to the visible spectrum.
By carefully calculating the cutoff frequency in nanometers, Schneider-Kreuznach has been able to produce a near-infrared cut filter that lets users of digital cameras get the most out of their camera gear. This means the benefit of an extended color gamut without the worry of unwanted false colors. Eliminating the near-infrared light leakage preserves true color rendition in the blacks while maintaining the high MTF of the camera and lens system.
The Platinum IRND attenuates in the ultraviolet and visible spectrum ranges like our traditional ND filters while providing further control in the near infrared. Special dyes provide precise absorption of IR to maximize the color gamut while virtually eliminating off-color tinting from IR pollution. Platinum IRND filters can generally benefit the use of digital camera sensors and standard color film stock.