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and a Bi525 filter can be used to block excitation sources and other interfering longer and shorter wavelength light while passing desired green emission wavelengths
The ND200 has identical male and female threads on either end so it can be stacked with other ND filters to achieve various optical densities
Healthy vegetation will absorb (not reflect) red light and strongly reflect NIR light
the SP625 may be a better option
The MidOpt LA120 Light Balancing Filter (Minus Blue) corrects the ~120 mired color change created by some high color temperature lighting (appearing bluish)
Ultimate Machine Vision Filter Test Kit - MidOpt SK100 Cleaning Kit and a Bi525 filter canThe MidOpt SK100 Ultimate Machine Vision Filter Kit is a powerful resource for testing and evaluating image quality, featuring 70 Machine Vision Filters for testing in the ultraviolet (UV), visible (VIS) and near infrared (IR). The filters have 27mm threaded mounts, and step up and step down rings are included to fit M25. 5 and M30. 5 lenses. Filter categories include Bandpass, Dual Bandpass, Longpass, Neutral Density, Shortpass, Polarizing, Light
US$ 12.75
US$ 16.00
US$ 18.00