The Berning Robot Star 50 S is a 35mm spring-motor-driven camera made by Otto Berning & Co., part of the Robot Star family of compact mechanical cameras designed to take rapid sequential exposures on 35mm film.

Auction evidence for the Robot Star 50 S is thin: a single UK saleroom hammer result on file shows the model selling for £172 in 2003, a wholesale auction figure rather than a retail asking price. With only one data point, today's value is hard to pin down precisely, and condition, completeness and the presence of the original spring motor and a working lens will swing what a Robot Star 50 S sells for in either direction. Buyers should treat the £172 figure as indicative rather than as a current market price.