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What is a Neutral Density Filter?

 

A neutral density or ND optical filter reduces or modifies the intensity of all wavelengths or colors of light equally, therefore providing for no changes in the hue of the color rendition. Neutral density filters can be colorless or clear, or they can be grey in tone.

 

For photography, the purpose of a ND filter is to reduce the amount of light entering via the camera lens, preventing overexposure of images. The filter allows for a longer exposure times than would otherwise be possible. The longer exposure time may allow the photographer to emphasize motion in the image taken. ND filters also enable larger apertures, producing a shallow depth of field.

 

Abrisa Technologies is a recognized global supplier of high quality, fabricated glass components, optical thin film coatings, and custom glass solutions for a wide variety of industries. From our US based Abrisa Industrial Glass fabrication facility in Santa Paula, CA and our ZC&R Coatings for Optics division in Torrance, CA we serve diverse industries such as microelectronics and displays, semiconductor, military, automotive, aerospace, medical, biomedical and scientific R&D. We provide custom specialty flat glass and coating products for applications such as: flat panel display, touch and gesture recognition; visible to IR imaging and surveillance; entertainment, indoor and outdoor lighting; advanced instrumentation; and photonics.


Information

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Need information for Thin Film Optical Coatings - Contact us Toll Free at: (800) 426-2864 or info@abrisatechnologies.com

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