9002.20.40.00 - Photographic

This HTS category, 9002.20.40.00, specifically covers photographic filters. These are optical elements designed to be used with photographic equipment, such as cameras, to alter the light passing through the lens. Examples include color correction filters, polarizing filters, neutral density filters, and diffusion filters, all of which modify the spectral composition or intensity of light to achieve specific photographic effects or improve image quality.

At the same level, sibling category 9002.20.80.00 pertains to "Other" filters and their parts and accessories. This distinction is crucial: 9002.20.40.00 is reserved exclusively for filters directly intended for photographic applications. If a filter is designed for a different optical apparatus not primarily for photography (e.g., scientific instruments, industrial inspection systems), it would likely fall under the "Other" category or a more specific heading if applicable.

As this is a leaf node, there are no further subcategories under 9002.20.40.00. Therefore, the classification rests on whether the filter's intended use is for photographic purposes. The absence of further subdivisions means that all items meeting the definition of a photographic filter are classified here.