Digital data projectors — commonly used for business presentations and connected to computers or video sources — generally do not classify under 9008, which covers photographic and image projectors in the traditional optical sense. Digital projectors typically fall under the heading for video display apparatus or monitors. The distinction turns on whether the device projects a photographic or optical image versus a digitally generated one.

Parts identifiable as suitable solely or principally for photographic enlargers or reducers classify under 900890 as parts and accessories for this heading. If a part is generic and not identifiable as specific to photographic enlargers, it may classify under a more general parts heading. Importers should document the intended use and design specificity of the part to support classification.