The Ermanox Reflex is a plate-format single-lens reflex camera produced by the German maker Ernemann of Dresden in the mid-1920s, derived from the Ermanox line that was marketed for its unusually fast lens and available-light capability. Ernemann was absorbed into Zeiss Ikon in 1926, so the Ermanox Reflex had only a short production window under the Ernemann name before the merger.

Auction evidence for the Ermanox Reflex is thin and highly condition-dependent: UK hammer prices in the saleroom have ranged from around £50 for an incomplete or heavily worn example up to £3,800 for a clean, complete one, with a mid-point around £1,150. Because only a handful of sales sit on record, today's value for any given Ermanox Reflex at auction turns almost entirely on completeness, cosmetics and whether the original fast Ernostar lens is present, and a single strong example can sell for many times what a tired one is worth.