A camera whose principal function is capturing still images classifies under 9006 even if it has a secondary video-recording capability. A device designed primarily for continuous motion-picture recording classifies under the cinematographic cameras heading. The principal function and design intent, supported by product specifications and marketing documentation, determine placement.

Lens attachments and filters presented separately from the camera body generally classify as parts and accessories for still cameras under 900691 if they are identifiable as camera accessories. However, a high-quality optical filter or lens element presented as an unmounted or mounted optical element may classify under the optical elements headings. The presentation and specificity of the article guide the determination.