In this episode of Eidos, we invite Dr. Gregory Roth to our "modern dinner party" to discuss the art, history, and philosophy of wet plate photography. We explore the Roth family’s 55-year tradition of military service, teaching, and photography, tracing a line from the battlefields of the Pacific to the darkrooms of Spokane Falls Community College. Dr. Roth shares his technical insights into the "elemental" process of creating tintypes and ambrotypes, and he argues for the enduring relevance of these "one-off" artistic constructions in a digital age.