This is a 14NDF-30-3 Neutral Density Filter, offered by Standa, a renowned vendor in the field of optical elements. The filter is unmounted, rectangular in shape, and has a base size of 50.8 x 50.8 mm, making it suitable for a wide range of optical applications.
The filter is designed with an Absorptive Neutral Density type, which is characterized by its ability to reduce the intensity of light without altering its color composition. This is particularly useful in applications where maintaining the color balance is crucial, such as in photography, cinematography, and scientific research.
The filter has a thickness of 3 mm, providing sufficient durability and stability. It is coated with Sta 14ndf-0.5 on both the front and back, which enhances its light absorption capabilities and ensures a consistent attenuation across the entire spectral range of 400-700nm.
The filter's geometry is shaped as a Thin Lens, which is beneficial in applications where minimal optical distortion is required. This filter is currently in stock and available for immediate purchase through the vendor's website.