The Schmitz & Thienemann Patent-Sport-Reflex is a reflex-style camera produced by the German maker Schmitz & Thienemann. It is encountered today as a collector's item rather than a working photographic tool, with interest centred on its rarity and historical position among early German reflex designs.

Auction evidence for the Patent-Sport-Reflex is extremely thin: a single UK saleroom hammer result of £313 from November 2003 is the only data point available, so a meaningful current price range cannot be established for 2026. Buyers asking what a Patent-Sport-Reflex is worth today should treat that figure as a historical reference only, since condition, completeness and the small number of surviving examples will drive what any given camera sells for.