Neutral density filters attenuate light by a constant amount that is, to first order, independent of the wavelength. Gelatin ND filters are the cheapest but tend to have more fluctuation with wavelength and a narrower wavelength range than glass ND filters and metallic types. Gelatine neutral density filters work by absorption ...
Specifications
|
Attenuator Type: |
Absorptive |
Shape: |
Square |
Size: |
50 mm |
Optical Density: |
4.0 |