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The MidOpt ND400 Neutral Density (ND) Filter has an optical density of 4
Chlorophyll Vegetation Index CVI = (NIR * Red) / (Green ^ 2)
plus a sturdy case for protective storage
(Note: there is a slight deep red/near-IR leak that peaks at ~720nm
Narrow Near-Infrared (IR) Bandpass Filter, 840-865nm - MidOpt BN850 Lenses The MidOpt ND400 Neutral DensityThe MidOpt BN850 Narrow Near Infrared (IR) Bandpass Filter is commonly used in security, traffic control, license plate recognition and industrial inspection applications when there is overwhelming ambient light conditions and is suitable for laser diode and LED illumination. MidOpt Bandpass Filters have a broad, Gaussian passband to mimic and accommodate the entire output of the most common LED wavelengths, are double side polished for exceptional