Neutral Density Filters

XyZ

Sunglasses for your camera lenses

Neutral density filters, also known as ND or gray filters, are darkened glass lenses used for the camera lens to reduce light intensity. The lenses are evenly grayed and, as a result, the light intensity that hits the sensor after passing through the filter and the lens is reduced. A gray filter allows you to choose opt for longer exposure times or a bigger camera aperture without affecting the color or the contrast. Gray filters are “sunglasses for camera lenses”.

A neutral density filter is essential if you’d like to create time exposures during the daytime. When you don’t use a filter, the light is too intense.

These filters are defined according to their optical density. The higher the optical density, the lower the transmission. They are also used to separate a subject matter from the background. In other words, the depth of field is reduced.

To name but a few examples, extremely intense image situations occur during welding processes, during laser applications, during the combustion process in e.g. engines, when viewing light sources and during melting processes in blast furnaces.

Mount & Size Options:

  • Threaded mount sizes: M22.5 to M105
  • C/CS mount, slip mount for lenses without filter threads, step-up/step-down adapter
  • Custom shapes and sizes; mounted and unmounted versions available

Neutral density filters specifications

ND series: VIS area

Ni series: VIS/NIR area

Art. no. Description Transmission Filter curve
ND030 Neutral Density Filter - Absorptive 50% Transmission; optical density: 0.3 425-675nm
ND060 Neutral Density Filter - Absorptive 25% Transmission; optical density: 0.6 425-675nm
ND090 Neutral Density Filter - Absorptive 12.5% Transmission; optical density: 0.9 425-675nm
ND120 Neutral Density Filter - Absorptive 6.25% Transmission; optical density: 1.2 425-675nm
ND200 Neutral Density Filter - Absorptive 1.0% Transmission; optical density: 2.0 425-675nm
ND300 Neutral Density Filter - Absorptive 0.1% Transmission; optical density: 3.0 425-675nm
ND400 Neutral Density Filter - Absorptive 0.01% Transmission; optical density: 4.0 425-675nm
Art. no. Description Transmission Filter curve
Ni030 Neutral Density Filter - Low Reflectivity 50% Transmission; optical density: 0.3 400-1100nm
Ni060 Neutral Density Filter - Low Reflectivity 25% Transmission; optical density: 0.6 400-1100nm
Ni090 Neutral Density Filter - Low Reflectivity 12.5% Transmission; optical density: 0.9 400-1100nm
Ni120 Neutral Density Filter - Low Reflectivity 6.25% Transmission; optical density: 1.2 400-1100nm