Thank you for your interest in the product. Please read the following before purchasing. King Brightbox-5000 Lightbox 10W x 2 A lightbox is a device used to illuminate photographic negatives, positives, X-ray films, tracing paper, and other materials from below. This device provides uniform light when observing films or tracing artwork. The King Brightbox-5000 provides bright illumination and is used by both professional and amateur photographers and artists.