Neutral Density (ND) screw-on filters are introduced in the optical path to extend the dynamic range of the meter. A wide selection of options are available
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ND-1 - This ND filter will increase the dynamic range by approximately x10 factor.
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ND-1.5
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ND-2 - This ND filter will increase the dynamic range by approximately x100 factor.
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ND-3 - This ND filter will increase the dynamic range by approximately x1000 factor.