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The ND400 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
enabling stable integration in demanding industrial setups
A polarizing sheet is commonly used over the light source
Find-R-Scope C-Cell End Cap Assembly - FJW 85086-1 Lenses The ND400 has identical maleThe FJW 85086 1 Find R Scope C Cell End Cap holds the battery and includes a 1 4 20 tripod mount. It's designed for E4 mercury battery Find R Scope Infrared (IR) viewers (microscopy or helmet mounted).
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